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SIIG Legacy and Beyond Series Quad (4 Port) Serial RS-232 PCIe Card with 16C550 UART

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$50.14

$ 22 .99 $22.99

In Stock

About this item

  • Quickly adds four RS-232 serial ports through an available PCI Express slot
  • Supports serial port data transfer rates up to 115.2 Kbps, compatible with 16C550 UART
  • 256-byte depth FIFO buffer supports fast data transfer especially in a multitasking environment
  • Perfect solution to connect with a POS system, industrial testing and control device, security system, logistic management equipment, etc.
  • Chipset: ASIX/MosChip MCS9900CV-AA.
  • At SIIG, we are proud of our products and service. Our products are of high quality and built to last. We provide Manufacturer Warranty for our products and email support. Contact us thru Amazon if any issues arise.


SIIG’s Quad-Serial Port RS-232 PCIe Card is designed to provide four 9-pin RS-232 serial ports to your PCI Express-enabled desktop computer. This 4-port serial PCIe adapter card features 256-byte FIFO buffers to support fast data transferring to ensure optimal performance in multitasking environment. This is a high performance adapter card to add four RS-232 serial ports for connecting additional serial-based devices such as a POS system, industrial testing and control device, security system, logistic management equipment and more.
Requirements:
-Desktop PC with one available PCI Express (PCIe) slot
-Windows 10 (32-/64-bit) / 8.x (32-/64-bit) / 7 (32-/64-bit) / Vista (32-/64-bit) / XP (32-/64-bit)
-Windows Server 2016 (32-/64-bit) / 2012 R2 / 2012 (32-/64-bit) / 2008 R2 / 2008 and 2003 (32-/64-bit)
-Linux kernel 2.6 and later version
-Works with Linux but not supported
Package Contents:
-Quad-Serial Port / RS-232 PCIe Card
-Driver CD
-Installation guide


David H
2025-08-19 13:17:04
Works great. I use it on a windows 10 64 bit PC for multiple ham radio interfaces. No driver problems at all.
R Newman
2025-07-30 18:47:38
This PCIe card was impossible to find drivers for. The complete lack of tech support was very disappointing. Will not be buying again.
JT
2025-07-02 12:04:47
Would not work with a new Dell desktop running win 10 pro. Errors on startup that could only be resolved by removing from the machine
Bravo
2025-06-16 21:30:40
Note that because this acts as a "legacy" port -- only 4 ports total are allowed. So an internal board port needs to be turned off to use all 4 ports on the device, which is best because they may be faster (at least 460800 baud) than local board port.Driver had to be loaded from SIIG website -- but actually worked! As opposed to multiple other boards which use a driver that does not work on Windows 11.
Jaimilson Kalb
2025-06-10 15:14:52
Worked perfectly, I'm using it in an automation solution and so far I'm having the expected result.
GEJ
2025-02-18 11:51:33
I'm one of those guys who, for his hobby, still needs lots and lots of RS-232 ports. Good cards like these are getting hard to find.Luckily, it's good to see that SIIG, a quality manufacturer I've had really good luck with in the past, still makes them!Installed in a brand new, Windows 10 PC. Loaded the drivers and 10 minutes later I was up and diddling away, both 45.45 and 75 baud RTTY, zero issues.Thanks, SIIG!