StarTech.com 2-Port PCI Express RS232 Serial Adapter Card, PCIe to Dual Serial DB9, Windows/Linux, TAA - Replaced by PEX2S953

As I've bought many StarTech devices in the past, I know the brand name for a quality product. This one is no different. Works great, adding two "old" DB-9 serial ports to my computer, which came with none of course, to run some ham radio devices.

This card installed smoothly on my Windows 7 x64 system - as long as I used the PCIe 1x slot. Originally I tried to use a PCIe 16x slot further away from the hot video card (the 16x slot is supposed to be backward compatible with smaller PCIe 1x cards) but the drivers did not work in that case. The card did not make a tight seating in the 16x slot. But as long as you have an open 1x slot, this card should work fine. I've had good success with the StarTech serial cards and ran into problems with other brands in the past.

It works fine but, on my system, it would not be recognized by Windows (10) unless it was installed in the first PCI-E slot (the one closest to the GPU). Not sure if it is my system or the card so I took off one star. You also need to install the drivers after the card is shown in device manager. Comes with a mini-CD but the driver version was older than what you can get on their web site. Otherwise, pretty solid, so far.

Easy way to add serial ports to a new Windows 11 computer. Worked first try.

Linux drivers will not compile on kernel 6xxx. I use Linux Mint 22.1 and tried with Ubuntu and Fedora 41 and it still errors out when compiling with either code 2 or 1 no matter what dependencies are installed. It does work with Windows 11 but it is not what I bought it for so I returned it.

I bought it to support an external OLD USR fax modem.This unit does not come with or provide online driver for Win 2019 Server, BUT, the included CD does provide drivers for WIN 10. I installed those, and it setup the two Seial ports, my Modem recognised, sending receiving faxes, just as needed.So, Overall, good JobHappppy

Native serial ports sometimes just work better than USB dongles do. StarTech is my go to for boards like this.

Easy install and setup on Windows 10 desktop. Software automatically configured both ports. I got this because my "newer" desktop only has PCI-e ports, so my older PCI card from Startech wouldn't fit. I never had a problem with the old card.Frankly, I only needed a single but the 2-port was same price. BONUS!