4-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 Card - 16950 UART - Expansion Card - Windows/Linux

PCI Express to Serial Adapter | 921.6Kbps | Windows® and Linux® Compatible

Product ID: PEX4S953

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  • 4 PORT SERIAL CARD: Serial controller card w/ 16950 UART based on ASIX AX99100, allows 4x DB9 ports w/bi-directional RS232 speeds up to 921.6Kbps per port, available 256 byte FIFO buffer; Upgraded version of our popular Serial card PEX4S952
  • OPTIONAL CONFIGURABLE POWER: PCIe multiport serial card provides 12v, 5v, or none through pin 9 w/up to 2A total; Each of the 4 ports are individually configurable; DB44 to 4x DB9 breakout cable incl
  • STANDARD PROFILE & LOW PROFILE BRACKET: PCI Express RS232 serial adapter card has standard bracket pre-installed & 1x low profile bracket incl for versatile install; Supports Windows XP and up & Linux
Your price
€163.99 EUR excl. VAT
€201.71 EUR incl. VAT

In stock: 575

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This PCI Express RS232 serial adapter card lets you add four RS232 (DB9) serial ports to your computer through a PCI Express (PCIe) slot, as if they were native serial ports. The 4 port PCIe serial card enables you to interact with serial devices, such as card readers, printers, PIN pads, and modems, at speeds of up to 921.6Kbps. 

Maximum Compatibility 

With broad OS support, including for Windows and Linux, this multiport PCI E serial card is easy to integrate into mixed environments. The card comes pre-configured with a full-sized bracket, and includes an optional low-profile bracket, so installation is easy regardless of the case form factor. This expansion card is a direct replacement for PEX4S952.  

Experience Optimal Technology 

This PCIe to serial adapter supports the following features: 

  • Industry standard 16950 UART compatible 
  • Supports max baud rate of up-to 921.6Kbps 
  • Provides 5/12V power output on Pin 9 when external power is connected 
  • 256-byte depth FIFO cache per transmitter and receiver 
  • Supports 9, 8, 7, 6, 5 data bits (one per port) 
  • Asix AX99100 chipset 
  • Base PCI Express 1.1 compliant 

The Choice of IT Pros Since 1985    

StarTech.com conducts thorough compatibility and performance testing on all our products to ensure we are meeting or exceeding industry standards and providing high-quality products to IT Professionals. Our local StarTech.com Technical Advisors have broad product expertise and work directly with our StarTech.com Engineers to provide support for our customers both pre and post-sales.  

PEX4S953 is backed by a StarTech.com lifetime warranty and free lifetime technical support. 

Applications

  • Connect to automated self-service kiosks or ATM machines
  • Connect in retail POS applications
  • Install in home or office workstations
  • Connect serial printers and other legacy devices to modern computers

Partner Numbers

  • Ingram IE V934950
  • Exertis IE 0010288090
  • UPC 065030888257

Compatibility

  • Windows 8 logo
  • Windows Server 2012 logo
  • Linux logo
  • Windows 7 logo
  • Windows Server 2016 logo
  • Windows 10 logo
  • Windows 11 logo
Windows® 7, 8, 8.1, 10, 11
Windows Server® 2003, 2008 R2, 2012, 2012 R2, 2016
Linux 2.4.x to 2.6.x LTS Versions only

Specifications

Warranty Information Warranty Lifetime
Connector(s) 1 - Connector Type(s) PCI Express x1
1 - Internal Ports LP4 (4 pin; Large Drive Power)
4 - External Ports DB-9 (9 pin, D-Sub)
Environmental Operating Temperature -10°C to 80°C (14°F to 176°F)
Storage Temperature -20°C to 100°C (-4°F to 212°F)
Humidity 5~85% RH
Hardware Ports 4
Interface Serial
Bus Type PCI Express
Card Type Low Profile (SP bracket incl.)
Port Style Integrated on Card
Chipset ID Asix AX99100
Packaging Information Package Height 5,0 cm [2,0 in]
Package Length 21,0 cm [8,3 in]
Shipping (Package) Weight 371,0 g [13,1 oz]
Package Width 15,0 cm [5,9 in]
Performance Serial Protocol RS-232
Max Baud Rate 921.6 Kbps
Data Bits 5, 6, 7, 8, 9
FIFO 256 Bytes
Flow Control None, Xon/Xoff, RTS/CTS
Parity None, Odd, Even, Space, Mark
Stop Bits 1, 1.5, 2
MTBF 214,358 hours
Physical Characteristics Product Height 1,5 cm [0,6 in]
Product Length 7,5 cm [3,0 in]
Weight of Product 50,0 g [1,8 oz]
Product Width 6,3 cm [2,5 in]
Color Green
Material Steel
Cable Length 30 cm [11,8 in]
Software OS Compatibility Windows® 7, 8, 8.1, 10, 11
Windows Server® 2003, 2008 R2, 2012, 2012 R2, 2016
Linux 2.4.x to 2.6.x LTS Versions only
Microsoft WHQL Certified Yes
Special Notes / Requirements Note Selectable power output on pin 9 of the serial port
What's in the Box 1 - Included in Package 4 Port PCI Express Serial Card
Full Profile Bracket (Installed)
Low Profile Bracket
12 in [30 cm] DB44 to DB9 Break-out Cable
Quick Start Guide

Accessories

SCNM9FM2MBK

2m Black DB9 RS232 Serial Null Modem Cable F/M

Connect your serial devices, and transfer your files

Your price
€6.99 EUR excl. VAT
€8.60 EUR incl. VAT

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Frequently Asked Questions

Troubleshooting

Older applications that use serial communication often use legacy hardware addresses that do not work with PCI, PCIe, or USB to Serial products. We recommend contacting the software provider/support team to check if this is the case.

Compliance and safety

Compliance letters

Safety Measures

  • If product has an exposed circuit board, do not touch the product under power.
  • If Class 1 Laser Product. Laser radiation is present when the system is open.
  • Wiring terminations should not be made with the product and/or electric lines under power.
  • Product installation and/or mounting should be completed by a certified professional as per the local safety and building code guidelines.
  • Cables (including power and charging cables) should be placed and routed to avoid creating electric, tripping or safety hazards.
*Product appearance and specifications are subject to change without notice.

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