Add-on Cards & Peripherals / Serial Cards & Adapters

Serial Cards & Adapters

If you're looking for a simple, cost-effective way to connect serial devices in your industrial application or server room, our Serial Cards and Adapters make it easy to add Serial ports (RS-232, RS-422, RS-485 etc.) to your computer through common expansion ports such as PCI and PCI Express, as well as through USB.

Ports

-- 1
-- 2
-- 3
-- 4
-- 8
-- 16

Bus Type

-- CardBus (PCMCIA)
-- ExpressCard
-- ExpressCard (USB 2.0 Bus)
-- Mini PCI Express
-- PCI Express
-- PCI / PCI-X (5 / 3.3V)
-- PCI (5 Volt)
-- USB 2.0
-- Motherboard Header
-- ISA

Card Type

-- Low Profile
-- Low Profile (SP bracket incl.)
-- Standard Profile
-- Standard Profile (LP bracket incl.)
-- Embedded
-- 34mm ExpressCard
-- 54mm ExpressCard

Serial Protocol

-- RS-232
-- RS-232/422/485
-- RS-422/485

Port Style

-- Cable Adapter
-- Dongle (Included)
-- External Hub
-- Integrated on Card

Viewing 1 to 97 of 97 Results


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    2 Port Native PCI Express RS232 Serial Adapter Card with 16550 UART
    PEX2S553 2 Port Native PCI Express RS232 Serial Adapter Card with 16550 UART Add 2 RS-232 serial ports to your standard or small form factor computer through a PCI Express expansion slot
    $51.99
    In Stock USA: 2885  |  Canada: 66
    4 Port Native PCI Express RS232 Serial Adapter Card with 16550 UART
    PEX4S553 4 Port Native PCI Express RS232 Serial Adapter Card with 16550 UART Add 4 RS-232 serial ports to your standard or small form factor computer through a PCI Express expansion slot
    $112.99
    In Stock USA: 820  |  Canada: 94
    1 Port Professional USB to Serial Adapter Cable with COM Retention
    ICUSB2321X 1 Port Professional USB to Serial Adapter Cable with COM Retention Add one serial RS-232 port with com retention to any laptop or computer with a USB port
    $43.99
    In Stock USA: 1367  |  Canada: 13
    2S1P Native PCI Express Parallel Serial Combo Card with 16550 UART
    PEX2S5531P 2S1P Native PCI Express Parallel Serial Combo Card with 16550 UART Add 1 parallel port and 2 RS-232 serial ports to your standard or low-profile computer through a PCI Express expansion slot
    $54.99
    In Stock USA: 827  |  Canada: 86
    2 Port Industrial USB to Serial RJ45 Adapter - Wallmount and DIN Rail
    ICUSB2322RJ 2 Port Industrial USB to Serial RJ45 Adapter - Wallmount and DIN Rail Add two RS232 serial RJ45 connections to a PC or Server through USB, with this DIN Rail and wall-mountable adapter
    $90.99
    In Stock USA: 364  |  Canada: 135
    USB to RS232 DB9/DB25 Serial Adapter Cable - M/M
    ICUSB232DB25 USB to RS232 DB9/DB25 Serial Adapter Cable - M/M Add an RS232 serial port to a notebook or desktop computer with this Plug-and Play USB adapter cable
    $20.99
    In Stock USA: 1556  |  Canada: 32
    PCI Serial Adapter Card (RS232) (16550 UART)
    PCI1S550 1 Port PCI RS232 Serial Adapter Card with 16550 UART Add an RS-232 serial port to your PC through a PCI expansion slot
    $33.99
    In Stock USA: 888  |  Canada: 51
    4 Port RS232 PCI Express Serial Card w/ Breakout Cable
    PEX4S553B 4 Port RS232 PCI Express Serial Card w/ Breakout Cable Add 4 RS232 serial ports to any PC using a single PCI Express expansion slot
    $113.99
    In Stock USA: 251  |  Canada: 38
    24in Internal USB Motherboard Header to Serial RS232 Adapter
    ICUSB232INT1 24in Internal USB Motherboard Header to Serial RS232 Adapter Add an RS232 serial port to any system with an available USB motherboard header
    $30.99
    In Stock USA: 776  |  Canada: 37
    2 Port PCI RS232 Serial Adapter Card with 16550 UART
    PCI2S550 2 Port PCI RS232 Serial Adapter Card with 16550 UART Add 2 high-speed RS-232 serial ports to your PC through a PCI expansion slot
    $43.99
    In Stock USA: 540  |  Canada: 148
    USB to RS232 DB9 Serial Adapter Cable - M/M
    ICUSB232 USB to RS232 DB9 Serial Adapter Cable - M/M Add one serial RS-232 port to any laptop or computer with a USB port
    $20.99
    In Stock USA: 942  |  Canada: 917
    2 Port Native PCI Express RS232 Serial Adapter Card with 16950 UART
    PEX2S952 2 Port Native PCI Express RS232 Serial Adapter Card with 16950 UART Add 2 RS-232 serial ports to your full height or low profile computer through a PCI Express slot
    $51.99
    In Stock USA: 346  |  Canada: 0
    2 Port Low Profile Native RS232 PCI Express Serial Card with 16550 UART
    PEX2S553LP 2 Port Low Profile Native RS232 PCI Express Serial Card with 16550 UART Add 2 high-speed RS-232 serial ports to your low profile/small form factor computer with a PCI Express expansion slot
    $51.99
    In Stock USA: 196  |  Canada: 6
    USB to RS232 DB9 Serial Adapter Cable with COM Retention
    ICUSB232PRO 1 ft USB to RS232 Serial DB9 Adapter Cable with COM Retention Add an RS-232 serial port to your laptop or desktop computer through USB; features COM port retention
    $27.99
    In Stock USA: 340  |  Canada: 0
    1 Port FTDI USB to Serial RS232 Adapter Cable with COM Retention
    ICUSB2321F 1 Port FTDI USB to Serial RS232 Adapter Cable with COM Retention Add an RS232 serial port with COM retention to your laptop or desktop computer through USB
    $28.99
    In Stock USA: 298  |  Canada: 0
    3ft USB to RS232 DB9 Serial Adapter Cable - M/M
    ICUSB232SM3 3ft USB to RS232 DB9 Serial Adapter Cable - M/M Add an RS232 serial port to your laptop or desktop computer through USB
    $28.99
    In Stock USA: 101  |  Canada: 9
    Low Profile PCI Express Serial Card w/ 16950 UART, Native PCIe Chipset
    PEX1S952LP 1 Port Low Profile Native PCI Express Serial Card w/ 16950 Add 1 high-speed serial RS-232 port to any PC with a PCI Express slot
    $51.99
    In Stock USA: 39  |  Canada: 48
    1 Port Native ExpressCard RS232 Serial Adapter Card with 16950 UART
    EC1S952 1 Port Native ExpressCard RS232 Serial Adapter Card with 16950 UART Add a high-speed RS-232 Serial port to your laptop computer via an ExpressCard expansion slot
    $76.99
    In Stock USA: 0  |  Canada: 85
    2 Port USB to RS232 Serial DB9 Adapter Cable
    ICUSB232C2 2 Port USB to RS232 Serial DB9 Adapter Cable Add 2 serial RS-232 ports to any laptop or computer with a USB port
    $46.99
    In Stock USA: 3056  |  Canada: 223
    2 Port PCI Low Profile RS232 Serial Adapter Card with 16550 UART
    PCI2S550_LP 2 Port PCI Low Profile RS232 Serial Adapter Card with 16550 UART Add 2 high-speed RS-232 serial ports to your low profile/small form factor computer with a PCI expansion slot
    $48.99
    In Stock USA: 1131  |  Canada: 137
    4 Port RS232 PCI Serial Card Adapter with Power Output
    PCI4S954PW 4 Port RS232 PCI Serial Card Adapter with Power Output Add 4 RS232 serial ports with 5V or 12V selectable power output to your computer, through a PCI slot
    $123.99
    In Stock USA: 443  |  Canada: 37
    Low Profile PCI Express Serial Card (RS232) (16550 UART, Native PCIe Chipset)
    PEX1S553LP 1 Port Low Profile Native RS232 PCI Express Serial Card with 16550 UART Add a RS-232 serial port to your standard or small form factor computer through a PCI Express expansion slot
    $57.99
    In Stock USA: 706  |  Canada: 23
    1 Port PCI RS232 Serial Adapter Card w/ 16950 UART - Dual Voltage
    PCI1S950DV 1 Port PCI RS232 Serial Adapter Card w/ 16950 UART - Dual Voltage Add an RS232 Serial port through a PCI expansion slot
    $42.99
    In Stock USA: 752  |  Canada: 19
    16 Port Rackmount FTDI USB to Serial COM Adapter Hub - RS232 Multiplexer
    ICUSB23216F 16 Port Rackmount FTDI USB to Serial COM Adapter Hub - RS232 Multiplexer Convert a Single USB Port into 16 RS232 Serial Ports in a Hardened Industrial-grade Rack-mountable Chassis
    $399.99
    In Stock USA: 79  |  Canada: 11
    8 Port Native PCI Express RS232 Serial Adapter Card with 16950 UART
    PEX8S952 8 Port Native PCI Express RS232 Serial Adapter Card with 16950 UART Add 8 RS232 serial ports to your computer via a single PCI Express slot
    $213.99
    In Stock USA: 144  |  Canada: 23
    4 Port Low Profile Native RS232 PCI Express Serial Card with 16950 UART
    PEX4S952LP 4 Port Low Profile Native RS232 PCI Express Serial Card with 16950 UART Add 4 high-speed RS-232 serial ports to your PC through a low profile PCI Express expansion slot
    $120.99
    In Stock USA: 208  |  Canada: 46
    4 Port Wall Mountable USB to Serial Adapter Hub with COM Retention
    ICUSB2324X 4 Port Wall Mountable USB to Serial Adapter Hub with COM Retention Add 4 serial RS-232 ports to any laptop or computer with a USB port
    $99.99
    In Stock USA: 236  |  Canada: 34
    Low Profile PCI Serial Card (RS232) (16550 UART)
    PCI1S550_LP 1 Port PCI Low Profile RS232 Serial Adapter Card with 16550 UART Add 1 high-speed RS-232 serial ports to your low profile/small form factor computer with a PCI expansion slot
    $45.99
    In Stock USA: 493  |  Canada: 65
    6 ft Professional RS422/485 USB Serial Cable Adapter w/ COM Retention
    ICUSB422 6 ft Professional RS422/485 USB Serial Cable Adapter w/ COM Retention Add an RS422/485 serial port to your system through USB; features COM port retention
    $69.99
    In Stock USA: 318  |  Canada: 34
    4 Port Native PCI Express RS232 Serial Adapter Card with 16950 UART
    PEX4S952 4 Port Native PCI Express RS232 Serial Adapter Card with 16950 UART Add four RS232 serial ports to any PC using a single PCI Express expansion slot
    $120.99
    In Stock USA: 175  |  Canada: 21
    8 Port USB to RS232 Serial DB9 Adapter Hub
    ICUSB2328 8 Port USB to RS232 Serial DB9 Adapter Hub Add eight RS232 serial ports to any notebook or desktop computer using a single USB port
    $215.99
    In Stock USA: 92  |  Canada: 10
    2 Port ISA RS232 Serial Adapter Card with 16550 UART
    ISA2S550 2 Port ISA RS232 Serial Adapter Card with 16550 UART Add 2 RS232 ports to legacy computer systems through an ISA slot
    $26.99
    In Stock USA: 724  |  Canada: 53
    PCI Express RS232 Serial Adapter Card with 16950 UART (Native Chipset)
    PEX1S952 1 Port Native PCI Express RS232 Serial Adapter Card with 16950 UART Add an RS232 Serial port through a PCI Express expansion slot
    $51.99
    In Stock USA: 349  |  Canada: 11
    4 Port USB to DB9 RS232 Serial Adapter Hub – Industrial DIN Rail and Wall Mountable
    ICUSB2324I 4 Port USB to DB9 RS232 Serial Adapter Hub – Industrial DIN Rail and Wall Mountable Add 4 DIN Rail-mountable RS232 Serial ports to any system through USB
    $115.99
    In Stock USA: 156  |  Canada: 36
    4 Port PCI RS232 Serial Adapter Card with 16550 UART
    PCI4S550N 4 Port PCI RS232 Serial Adapter Card with 16550 UART Add 4 high-speed RS-232 serial ports to your PC through a PCI expansion slot
    $70.99
    In Stock USA: 247  |  Canada: 49
    24in Internal USB Motherboard Header to 2 Port Serial RS232 Adapter
    ICUSB232INT2 24in Internal USB Motherboard Header to 2 Port Serial RS232 Adapter Add two RS232 serial ports to any system with an available USB motherboard header
    $66.99
    In Stock USA: 256  |  Canada: 21
    2 Port FTDI USB to Serial RS232 Adapter Cable with COM Retention
    ICUSB2322F 2 Port FTDI USB to Serial RS232 Adapter Cable with COM Retention Add two RS232 serial ports with COM retention to your laptop or desktop computer through USB
    $65.99
    In Stock USA: 242  |  Canada: 9
    2 Port PCI RS232 Serial Adapter Card w/ 16950 UART - Dual Voltage
    PCI2S950DV 2 Port PCI RS232 Serial Adapter Card w/ 16950 UART - Dual Voltage Add 2 RS-232 serial ports to your PC with this dual voltage universal PCI expansion card
    $50.99
    In Stock USA: 313  |  Canada: 122
    2S1P PCI Express Serial Parallel Combo Card with Breakout Cable
    PEX2S1P553B 2S1P PCI Express Serial Parallel Combo Card with Breakout Cable Add a parallel port and two RS-232 serial ports to your PC through a PCI-Express expansion slot
    $66.99
    In Stock USA: 230  |  Canada: 194
    1S1P Native PCI Express Parallel Serial Combo Card with 16950 UART
    PEX1S1P952 1S1P Native PCI Express Parallel Serial Combo Card with 16950 UART Add a parallel and serial port through a standard or low-profile PCI Express slot
    $64.99
    In Stock USA: 220  |  Canada: 42
    2 Port USB to RS232 RS422 RS485 Serial Adapter with COM Retention
    ICUSB2324852 2 Port USB to RS232 RS422 RS485 Serial Adapter with COM Retention Add RS232, RS422 and RS485 support to your laptop or desktop computer via USB
    $99.99
    In Stock USA: 138  |  Canada: 20
    1 Port FTDI USB to Serial RS232 Adapter Cable with Optical Isolation
    ICUSB2321FIS 1 Port FTDI USB to Serial RS232 Adapter Cable with Optical Isolation Add an RS232 serial port with circuit isolation to your laptop or desktop computer, through USB
    $117.99
    In Stock USA: 116  |  Canada: 63
    2 Port PCI RS422/485 Serial Adapter Card with 161050 UART
    PCI2S4851050 2 Port PCI RS422/485 Serial Adapter Card with 161050 UART Add two RS422/485 serial ports through a standard or low profile PCI expansion slot
    $103.99
    In Stock USA: 122  |  Canada: 23
    Metal Industrial USB to RS422/RS485 Serial Adapter w/ Isolation
    ICUSB422IS 1 Port Metal Industrial USB to RS422/RS485 Serial Adapter w/ Isolation Add an R422/485 serial port to your laptop or desktop computer through USB
    $118.99
    In Stock USA: 96  |  Canada: 10
    PCI Express RS232 Serial Adapter Card with 16550 UART (Native Chipset)
    PEX1S553 1 Port Native PCI Express RS232 Serial Adapter Card with 16550 UART Add a high-speed RS-232 Serial port to your computer through a PCI Express expansion slot
    $59.99
    In Stock USA: 178  |  Canada: 45
    4 Port PCI Express PCIe Serial Combo Card - 2 x RS232 2 x RS422 / RS485
    PEX4S232485 4 Port PCI Express PCIe Serial Combo Card - 2 x RS232 2 x RS422 / RS485 Add two RS232, and two RS422/485 serial ports to your PC through a PCI-Express expansion slot
    $142.99
    In Stock USA: 74  |  Canada: 9
    4 Port USB to RS232 Serial DB9 Adapter Hub
    ICUSB2324 4 Port USB to RS232 Serial DB9 Adapter Hub Add four RS232 serial ports to any notebook or desktop computer using a single USB port
    $92.99
    In Stock USA: 111  |  Canada: 19
    2 Port Low Profile Native RS232 PCI Express Serial Card with 16950 UART
    PEX2S952LP 2 Port Low Profile Native RS232 PCI Express Serial Card with 16950 UART Add 2 RS-232 serial ports to your standard or small form factor computer through a PCI Express expansion slot
    $51.99
    In Stock USA: 188  |  Canada: 10
    2 Port Native ExpressCard RS232 Serial Adapter Card with 16950 UART
    EC2S952 2 Port Native ExpressCard RS232 Serial Adapter Card with 16950 UART Add 2 high-speed RS-232 Serial ports to your notebook computer via an ExpressCard slot
    $87.99
    In Stock USA: 105  |  Canada: 32
    16 Port Low Profile RS232 PCI Express Serial Card - Cable Included
    PEX16S952LP 16 Port Low Profile RS232 PCI Express Serial Card - Cable Included Add 16 RS232 serial ports to your computer via a single low profile PCI Express slot
    $359.99
    In Stock USA: 25  |  Canada: 5
    8 Port USB to DB9 RS232 Serial Adapter Hub – Industrial DIN Rail and Wall Mountable
    ICUSB2328I 8 Port USB to DB9 RS232 Serial Adapter Hub – Industrial DIN Rail and Wall Mountable Add 8 DIN Rail-mountable RS232 Serial ports to any system through USB
    $191.99
    In Stock USA: 44  |  Canada: 8
    2 Port RS232 PCI Express Serial Card w/ Breakout Cable
    PEX2S553B 2 Port RS232 PCI Express Serial Card w/ Breakout Cable Add two RS232 serial ports to any PC using a single PCI Express expansion slot
    $52.99
    In Stock USA: 156  |  Canada: 16
    2 Port PCI Express RS232 Serial Adapter Card with 16950 UART
    PEX2S950 2 Port PCI Express RS232 Serial Adapter Card with 16950 UART Add 2 RS232 serial ports to your standard or small form factor computer through a PCI Express expansion slot
    $62.99
    In Stock USA: 122  |  Canada: 3
    8 Port Low Profile RS232 PCI Serial Card with 16950 UART
    PCI8S950LP 8 Port Low Profile RS232 PCI Serial Card with 16950 UART Add 8 RS-232 serial ports to your computer via a single low profile or full height PCI slot
    $169.99
    In Stock USA: 36  |  Canada: 6
    2 Port RS232/422/485 PCI Serial Adapter Card w/ ESD Protection
    PCI2S232485I 2 Port RS232/422/485 PCI Serial Adapter Card w/ ESD Protection Control and communicate with two serial devices even with mixed RS-232 & 485 protocols
    $159.99
    In Stock USA: 30  |  Canada: 6
    FTDI USB to Serial Null Modem DCE Adapter Cable
    ICUSB232FTN 1 Port USB to Null Modem RS232 DB9 Serial DCE Adapter Cable with FTDI Add a Null Modem RS232 serial port to your laptop or desktop computer through USB
    $31.99
    In Stock USA: 49  |  Canada: 9
    2S1P PCI Serial Parallel Combo Card with 16550 UART
    PCI2S1P 2S1P PCI Serial Parallel Combo Card with 16550 UART Add a parallel port and two RS-232 serial ports to your PC through a PCI expansion slot
    $42.99
    Check Reseller Availability
    2 Port PCI RS232 Serial Adapter Card with 16950 UART
    PCI2S950 2 Port PCI RS232 Serial Adapter Card with 16950 UART Add 2 RS-232 serial ports to your computer via a single PCI slot
    $59.99
    In Stock USA: 0  |  Canada: 6
    8 Port PCI Express Low Profile Serial Adapter Card
    PEX8S950LP 8 Port PCI Express Low Profile Serial Adapter Card Add 8 RS-232 serial ports to your computer via a single low profile PCI Express slot
    $213.99
    Check Reseller Availability
    2 Port RS232 Mini PCI Express Serial Card w/ 16950 UART
    MPEX2S952 2 Port RS232 Mini PCI Express Serial Card w/ 16950 UART Add two RS232 serial ports to an Embedded System with a mini PCI-Express slot
    $89.99
    In Stock USA: 690  |  Canada: 154
    2S2P PCI Serial Parallel Combo Card with 16C1050 UART
    PCI2S2PMC 2S2P PCI Serial Parallel Combo Card with 16C1050 UART Add two Serial and two Parallel ports to your desktop system through a single PCI slot
    $72.99
    In Stock USA: 392  |  Canada: 191
    4 Port RS232 Mini PCI Express Serial Card w/ 16650 UART
    MPEX4S552 4 Port RS232 Mini PCI Express Serial Card w/ 16650 UART Add Four RS232 Serial Ports to an Embedded System through a mini PCI Express Slot
    $117.99
    In Stock USA: 155  |  Canada: 25
    10 Pack of 2-Port PCI Serial Cards
    10PKPCI2S550 10 Pack 2 Port PCI Serial Adapter Cards Add two RS232 Serial ports through a PCI expansion slot - 10 pack
    $294.99
    In Stock USA: 55  |  Canada: 65
    4 Port PCI RS232 Serial Adapter Card with 16550 UART
    PCI4S550 4 Port PCI RS232 Serial Adapter Card with 16550 UART Add four RS232 serial ports to any PC using a single PCI expansion slot
    $90.99
    In Stock USA: 175  |  Canada: 101
    2 Port Industrial Wall Mountable USB to Serial Adapter Hub with DIN Rail Clips
    ICUSB2322I 2 Port Industrial Wall Mountable USB to Serial Adapter Hub with DIN Rail Clips Add 2 DIN Rail-mountable RS232 Serial ports to any system through USB
    $99.99
    In Stock USA: 151  |  Canada: 52
    2 Port RS232 PCI Express Serial Card with Power Output
    PEX2S952PW 2 Port RS232 PCI Express Serial Card with Power Output Add 2 RS232 serial ports with 5V or 12V selectable power output to your computer through a PCI Express slot
    $64.99
    In Stock USA: 226  |  Canada: 103
    1 Port PCI RS232 Powered Serial Adapter Card
    PCI1S650PW 1 Port PCI RS232 Powered Serial Adapter Card Add a powered RS232 Serial port through a PCI expansion slot
    $50.99
    In Stock USA: 277  |  Canada: 12
    1S1P 54mm ExpressCard Serial Parallel Combo Card with 16550 UART
    EC1S1P55254 1S1P 54mm ExpressCard Serial Parallel Combo Card with 16550 UART Add a Serial and Parallel port to your laptop via a 54mm ExpressCard slot
    $89.99
    In Stock USA: 153  |  Canada: 24
    2 Port 54mm ExpressCard RS232 Serial Adapter Card - 16550 UART
    EC2S55254 2 Port 54mm ExpressCard RS232 Serial Adapter Card - 16550 UART Add 2 high-speed RS-232 Serial ports to your laptop via a 54mm ExpressCard slot
    $86.99
    In Stock USA: 87  |  Canada: 12
    2 Port Low Profile RS-422/485 PCI Serial Card
    PCI2S485LP 2 Port Low Profile RS-422/485 PCI Serial Card Add 2 RS422/485 serial ports to your low profile/small form factor computer with a PCI expansion slot
    $100.99
    In Stock USA: 70  |  Canada: 77
    1 Port ExpressCard to RS232 DB9 Serial Adapter Card w/ 16950 - USB Based
    EC1S232U2 1 Port ExpressCard to RS232 DB9 Serial Adapter Card w/ 16950 - USB Based Add a USB-based RS232 Serial port to your laptop through an ExpressCard slot
    $43.99
    In Stock USA: 158  |  Canada: 10
    2s1p Serial Parallel Combo Mini PCI Express Card for Embedded Systems
    MPEX2S1P552 2s1p Serial Parallel Combo Mini PCI Express Card for Embedded Systems Add two RS232 Serial Ports, and one Parallel Port to an Embedded System, through a mini PCI-Express Slot
    $99.99
    In Stock USA: 62  |  Canada: 137
    4 Port Native ExpressCard RS232 Serial Adapter Card with 16C950 UART
    EC4S952 4 Port Native ExpressCard RS232 Serial Adapter Card with 16C950 UART Control and communicate with up to four RS232 serial devices through a laptop ExpressCard slot
    $175.99
    In Stock USA: 35  |  Canada: 3
    2 Port CardBus RS232 Serial Laptop PC Adapter Card - 16950
    CB2S950 2 Port CardBus RS232 Serial Laptop PC Adapter Card - 16950
    $76.99
    In Stock USA: 61  |  Canada: 30
    4 Port CardBus RS232 Serial Laptop PC Adapter Card - 16950
    CB4S950 4 Port CardBus RS232 Serial Laptop PC Adapter Card - 16950 Add four RS232 Serial ports to your laptop computer via a CardBus expansion slot
    $155.99
    In Stock USA: 30  |  Canada: 32
    2 Port Wall Mountable USB to Serial Adapter Hub with COM Retention
    ICUSB2322X 2 Port Wall Mountable USB to Serial Adapter Hub with COM Retention Add 2 serial RS-232 ports to any laptop or computer with a USB port
    $64.99
    In Stock USA: 71  |  Canada: 18
    2 Port 16C550 Serial and 1 Port EPP/ECP Parallel Slot Saver PCI Card
    PCI2S1PVA 2 Port 16C550 Serial and 1 Port EPP/ECP Parallel Slot Saver PCI Card Add a parallel port and two RS-232 serial ports to your PC through a PCI expansion slot
    $52.99
    In Stock USA: 82  |  Canada: 29
    1S1P Mini PCI Express Serial Parallel Card w/ 16950 UART
    PEX1S1PMINI 1S1P Mini PCI Express Serial Parallel Card w/ 16950 UART Add Serial and Parallel support to Embedded Systems via mini PCI Express
    $89.99
    In Stock USA: 32  |  Canada: 17
    1 Port CardBus PCMCIA RS422 RS485 Serial Laptop Adapter Card
    CB1S485 1 Port CardBus PCMCIA RS422 RS485 Serial Laptop Adapter Card Add an RS422/485 Serial port to your laptop computer via a CardBus expansion slot
    $139.99
    In Stock USA: 19  |  Canada: 26
    ISA Serial Adapter Card (RS232) with 16550 UART
    ISA1S550 1 Port ISA RS232 Serial Adapter Card with 16550 UART Add an RS232 port to legacy computer systems through an ISA slot
    $23.99
    In Stock USA: 108  |  Canada: 90
    3 ft 1s1p USB to Serial Parallel Port Adapter Cable
    ICUSB2321284 3 ft 1s1p USB to Serial Parallel Port Adapter Cable Add one RS232 Serial, and one IEEE 1284 Parallel port to your computer through a single USB connection
    $34.99
    In Stock USA: 69  |  Canada: 20
    4 Port PCI RS422 RS485 Serial Adapter Card
    PCI4S422DB9 4 Port PCI RS422 RS485 Serial Adapter Card Add four RS422/485 serial ports to your desktop computer through a PCI expansion slot
    $244.99
    In Stock USA: 9  |  Canada: 12
    8 Port PCI RS232 Serial Adapter Card High Speed 16950 cable included
    PCI8S9503V 8 Port PCI RS232 Serial Adapter Card High Speed 16950 cable included Add eight RS232 serial ports to any PC using a single PCI expansion slot
    $179.99
    In Stock USA: 2  |  Canada: 2
    2 Port PCI RS422 RS485 DB9 Serial Adapter Card
    PCI2S422ISO 2 Port PCI RS422 RS485 DB9 Serial Adapter Card Add two optically isolated R422/485 serial port to your desktop computer via a PCI slot
    $173.99
    In Stock USA: 2  |  Canada: 6
    RS-232 to RS485/422 Serial Converter
    IC485S RS-232 to RS485/422 Serial Converter Convert an RS232 data signal to either RS485 or RS422
    $49.99
    In Stock USA: 1  |  Canada: 0
    Coming Soon
    8 Port Low Profile PCI Express RS232 Serial Adapter Card w/ 161050 UART
    PEX8S1052 8 Port Low Profile PCI Express RS232 Serial Adapter Card w/ 161050 UART Add 8 RS-232 serial ports to your computer through a single low profile PCI Express slot
    $222.99
    4 Port PCI Express RS232 Serial Adapter Card with 16950 UART
    PEX4S950 4 Port PCI Express RS232 Serial Adapter Card with 16950 UART Add four RS232 serial ports to any PC using a single PCI Express expansion slot
    $127.99
    In Stock USA: 95  |  Canada: 67
    2 Port Dual Voltage WHQL Approved Serial Card with Legacy Port Remap Function
    PCI2S650DV 2 Port Dual Voltage WHQL Approved Serial Card with Legacy Port Remap Function
    $53.99
    In Stock USA: 119  |  Canada: 65
    4 Port PCI RS232 Serial Adapter Card High Speed 16950 cable included
    PCI4S9503V 4 Port PCI RS232 Serial Adapter Card High Speed 16950 cable included Add four RS232 serial ports to any PC using a single PCI expansion slot
    $142.99
    In Stock USA: 17  |  Canada: 30
    4 Port PCI Dual Profile RS232 Powered Serial Adapter Card
    PCI4S650PW 4 Port PCI Dual Profile RS232 Powered Serial Adapter Card Add four RS232 serial ports with 5V or 12V power output to your computer through a PCI slot
    $139.99
    In Stock USA: 0  |  Canada: 3
    1 Port ExpressCard RS232 Serial Adapter Card w/ 16950 UART - USB Based
    EC1S232U 1 Port ExpressCard RS232 Serial Adapter Card w/ 16950 UART - USB Based Add a high-speed, USB based RS232 Serial port to your laptop via an ExpressCard slot
    $43.99
    In Stock USA: 0  |  Canada: 3
    4 Port ExpressCard RS232 Serial Card Adapter with 16950 UART
    EC4S950 4 Port ExpressCard RS232 Serial Card Adapter with 16950 UART Add four RS232 Serial ports to your laptop computer via an ExpressCard expansion slot
    $179.99
    In Stock USA: 0  |  Canada: 27
    2S1P PCI Express Serial Parallel Combo Card with Breakout Cable
    PEX2S1P552B 2S1P PCI Express Serial Parallel Combo Card with Breakout Cable Add a parallel port and two RS-232 serial ports to your PC through a PCI-Express expansion slot
    $66.99
    In Stock USA: 9  |  Canada: 53
    2 Port Low Profile Native RS232 PCI Express Serial Card with 16550 UART
    PEX2S552LP 2 Port Low Profile Native RS232 PCI Express Serial Card with 16550 UART Add 2 RS-232 serial ports to your standard or small form factor computer through a PCI Express expansion slot
    $60.99
    In Stock USA: 4  |  Canada: 6
    Clearance
    2S1P PCI Serial Parallel Dual Voltage WHQL PCI Adapter Card
    PCI2S1PDV 2S1P PCI Serial Parallel Dual Voltage WHQL PCI Adapter Card
    $9.99
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