StarTech 2-Port PCI Express RS232 Serial Adapter Card, TAA (PEX2S553)

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.

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.

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.

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 Job Happppy

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.

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!

We replaced an accountants computer with a new Dell, but didn't realize until we were outfitting the computer that it was missing the serial port needed for our payclock. Serial ports are becoming rare for new PC's, but some old hardware still need them. This is a perfect solution. Bought this at 6PM, it arrived before lunch the next day (Thank You Prime!!) Works great on our 32bit Windows 7

I bought this so I could console into my Cisco switches and im happy to say that it works perfectly without a hitch. Windows 8 installed it without the extra driver cd supplied so installation was quick and simple. Highly recommended.

Excellente carte. Montage dans un PC tour sans problème, juste que le pilote sur le cd fourni n'a pas fonctionné. J'ai dû le téléchargé sur le site de la marque. Pour info le site de StarTech est super bien fait. J'ai aussi contacté le service technique avant l'achat pour avoir des renseignements, et le service m'a répondu dans la journée ,bravo à eux. Dans la boîte la doc est en Anglais mais on la trouve en Français sur le site de la marque. Certes le prix est assez élevé mais ayant eu des déboires avec une carte à bas coût, la qualité se paie. Je recommande donc StarTech qui pour moi est une marque sérieuse et de qualité.

Funcionando a la perfección desde hace meses, instalada en un Windows 11 con una máquina virtual con Windows XP y con 0 problemas.

werkt goed

Costs a bit more than many other cards, but just installed and it worked fine in a Windows 11 PC. The PC recognized it right away and automatically downloaded the drivers. I use it with a Ham Radio app called Chirp, for programming radios and worked perfectly. Strongly recommended.