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Your cart is empty.The PCI Express serial card lets you turn a PCI Express slot into 2 RS232 (DB9) serial ports. Based on a native single chip design (no bridge chip), this 2-port serial adapter card allows you to harness the full capability offered by PCI Express (PCIe), and reducing the load applied to the CPU by as much as 48% over conventional serial cards. The RS232 Serial Adapter Card (PEX2S553) is compatible with a broad range of operating systems including Windows 2000/XP/2003/Vista/Windows 7/Server 2008 R2 (32 and 64 bit), Linux Kernel 2.6.11 to 4.11.x, and MAC OS 10.4 and above. Plus, the serial card includes an optional half-height/low profile bracket that allows the card to be installed in any PCI Express slot, regardless of the size of the computer case. This product is a replacement for our PEX2S552 card. Backed by a StarTech..
David
2025-09-03 17:35:04
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.
Bill H
2025-08-14 11:38:25
Easy way to add serial ports to a new Windows 11 computer. Worked first try.
Simster
2025-08-11 15:56:24
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.
Donald
2025-07-02 21:22:56
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!
Matt from New York
2025-06-10 15:36:51
I was able to get it to work with Windows 10 (one year old Dell desktop). There are Windows 10 drivers on the company website and it does list in one spec on their page Windows 10 compatibility, but not on another page.After I installed the drivers, I did have to reboot a couple of times because it was showing the hardware installed but not as a serial port in Device Manager and it finally appeared as a regular serial port. I could change the COM port number and it's working well for my purpose (Davis weather station).
D. Coral
2025-06-04 13:34:18
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.
ali
2025-06-02 13:05:30
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
JOHN J. ARDINE
2025-04-11 14:16:44
This RS232 card would not work in my computer. Had to be updated with the Oxford Chip UART 16950.Also required power adapter from power supply to four pin connector on RS232 board. The card nowworks great as I use it for packet with APRS software. Please note: All computers are not the same. Thanksto Star Tech Techs they kept at it until problem was solved. John
MW
2025-03-28 09:14:33
does the job its supposed to, great
Gman
2025-01-23 20:57:02
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.
MANITOU
2024-12-18 15:32:37
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.
Toni Deveeuw
2024-12-14 14:48:18
werkt goed
Cliente
2024-11-26 18:31:39
Precaucion se se actualizad el PC a Windows 11 no es compatible.
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