2 Port ISA RS232 Serial Adapter Card with 16550 UART

Add 2 RS232 ports to legacy computer systems through an ISA slot

Product ID: ISA2S550

  • Supports COM1-COM7 and IRQ 3,4,5,9,10,11,12,15 settings for each port
  • Full jumper set to ensure compatibility with almost any PC system
  • Supports the RS-232 interface
48,99 € EUR exc VAT
58,79 € EUR inc VAT

Overview's ISA-based RS232 Serial Card (16550 UART) can be installed in an ISA motherboard slot to add two RS232 serial COM ports, with support for data transfer rates of up to 460.8Kbps for peak serial device performance.

The ISA Serial Adapter Card includes drivers for DOS®, Windows® and LInux, and offers a full built-in jumper set to ensure easy configuration and broad compatibility.

A cost-effective solution for connecting serial modems, POS devices, PDAs, digital cameras, printers, ISDN terminal adapters and more, to a system, the ISA serial card is backed by's Lifetime Warranty and free lifetime technical support.

The Advantage

  • Built-in jumpers allow easy configuration to any free IRQ
  • Data transfer rates of up to 460.8 Kbits/sec. for peak serial device performance
  • Easy to install and use with full step-by-step instructions


Manufacturing (CNC machinery, process control equipment, bar code scanners, serial printers)

POS (credit/debit card readers, receipt printers, bar code scanners, cash registers, scales)

Consumer (modems, PDAs, digital cameras, printers)

Security (UPS control, access key panels, video cameras, card readers, modems)

Casino (video lottery terminals, slot machines)

Environmental Control (lighting, temperature, clocks)

Healthcare (patient monitoring equipment, nurses' stations, modems)

Hotel Front Desk (serial printers, bar code scanners, keyboard, mouse, receipt printer, credit/debit card reader)

Hospitality/Restaurant (credit card/debit card reader, serial printers)

ISDN Networking

Technical Specifications

Warranty Information
Warranty Lifetime
Bus Type ISA
Card Type Standard Profile
Chipset ID ASIX - MCS9820CV
Interface Serial
Port Style Integrated on Card
Ports 2
FIFO 16 Bytes
Max Baud Rate 460.8 Kbps
Serial Protocol RS-232
Connector Type(s) 1 - ISA (16-bit) Male
External Ports 2 - DB-9 (9 pin, D-Sub) Male
OS Compatibility DOS, Windows 95, 98, ME; Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit); Linux 2.4.x
Humidity 5~85% RH
Operating Temperature -10°C to 80°C (14°F to 176°F)
Storage Temperature -20°C to 100°C (-4°F to 212°F)
Packaging Information
Shipping (Package) Weight 0.1 kg [0.3 lb]
What's in the Box
Included in Package 1 - I/O CARD
1 - Instruction Sheet


View full OS compatibility
DOS, Windows 95, 98, ME; Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit); Linux 2.4.x