StarTech.com

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
€ 59,28 EUR inc VAT
Not Available
May be in stock with partners
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Overview

StarTech.com'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 StarTech.com's Lifetime Warranty and free lifetime technical support.

The StarTech.com 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

Applications

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
Hardware
Bus Type ISA
Card Type Standard Profile
Chipset ID ASIX - MCS9820CV
Interface Serial
Port Style Integrated on Card
Ports 2
Performance
FIFO 16 Bytes
Max Baud Rate 460.8 Kbps
Serial Protocol RS-232
Connector(s)
Connector Type(s) 1 - ISA (16-bit) Male
External Ports 2 - DB-9 (9 pin, D-Sub) Male
Software
OS Compatibility DOS, Windows 95, 98, ME; Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit); Linux 2.4.x
Environmental
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

Compatibility

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

Certifications

Accessories

Product Support

Frequently Asked Questions

Troubleshooting

When you troubleshoot issues with a serial device, there are some quick tests that you can complete to rule out potential problems. You can test to make sure that the following components are working correctly and are not the source of the issue:

  • Serial cables

  • Serial ports

  • Serial devices

To test your setup components, try the following:

  • Use the serial cable, serial port, and serial device in another setup to see if the problem is with the components or the setup.

  • Use a different serial cable, serial port, and serial device in your setup to see if the problem persists. Ideally, you should test a component that you know works in another setup.

When you test your cables, it is recommended that you do the following:

  • Test each cable individually.

  • Use short cables when you are testing.

When you test the serial ports and serial device, it is recommended that you do the following:

Note: Some serial devices work only if the COM port number is between a certain range. For example, COM1 to COM4.

To check whether or not an RS-232 serial port is working, perform an RS-232 loopback test by doing the following:

  1. If your serial port is not female, convert it by taking a female/female cable or gender changer and plugging it into the serial port.
  2. Take a metal paperclip or wire and cross pins 2 and 3. If you look closely at the female end, the pins should be numbered.
  3. Open a telnet session on the COM port number of the device that you are testing. To find out the COM port number, refer to the following FAQ: https://www.startech.com/faq/com-port-listing-windows.

Note: To open a telnet session on the COM port, you need a telnet client like PuTTY or Hyper Terminal. Windows XP comes with Hyper Terminal.

  1. When the session is open, anything you type into it you should see. The loopback test fails when you cannot see what you are typing.

If the loopback test fails, make sure that the serial cable or gender changer that you are using works and that the adapter is in the correct port. 

You can check multiple ports at the same time by opening multiple sessions, putting the loopback adapter on one port, and trying to type into each session.  When you can see what you are typing, you know that the COM port is working and you can see which port number the physical serial port is. Close the window for the port that you just tested to speed up the testing of the remaining serial ports.

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