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Your cart is empty.The low profile/half-height PCI Express Serial Card turns a PCI Express slot into two RS232 (DB9) serial connections. The card is constructed using a native single chip design that lets you harness the full capability offered by PCI Express (PCIe), while reducing the load applied to the CPU by as much as 48% over conventional bridge chip serial cards. The PCI Express RS232 Serial Adapter Card 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 ships with a low profile/half-height bracket installed but includes an optional full profile bracket that lets you add 2 serial ports to virtually any computer (regardless of the case form factor). This product is a replacement for our PEX2S552LP card. Backed by a StarTech..
Joe Schmoe
2025-08-24 10:46:58
Worked great for my application, connecting serial output device to my PC. Getting the data I need now without hesitation.
Therron
2025-08-15 16:25:08
Easy to install. Easy to configure. Easy to use. What more can you ask?
E J
2025-08-08 10:10:46
Worked well. Came with the driver on a mini CD.
Erniezeke
2025-08-07 11:21:33
I got a new computer with Windows 7. Naturally, there are no RS232 ports, just USB and I have a GPS I needed to hook up. After looking around for a Windows 7 compatible DBI to USB converter and looking at various cards, I selected this one. Installation was nothing and Windows 7 already had the driver in its system (didn't need to use the driver CD). After an initial failure, I changed the com port from 2 to 1 and bingo, it works beautiful. The only gripe is the price for an "obsolete" port.
Ken F.
2025-08-02 17:01:28
The device is very high quality and met the specifications.
🌈 KT
2025-07-30 17:57:12
Really glad to see this line of products. We have a very old computer hooked to our TV, and this allows us let it work with our newer machines when needed (all MS OS). We tend to watch a batch of movies, then hook up a laptop and swap for newer ones. Occasionally pop in a thumb drive to re-watch an older one. That kind of thing.We had an old serial drive I wanted to plug in just to give us more space. I hate having old parts sitting around that were perfectly fine. It’s good to be able to use them again.It felt nicely built, sturdy, solid plug-in, no wibbly wobbly. Seats nicely and has not caused us any trouble at all.I’m good about updating if anything pops up. Any questions, feel free to comment or email and I’ll try to help.
Michael
2025-07-05 17:37:00
For the most part, I'm really happy with startech products. I need a serial port on a desktop and decided to try this. It's working great with no isseus. I'm using it with a serial printer and have had no issues with it dropping out.It was really simple to install. It takes up one or two half height slots (if you only need one serial port, you don't need to use up a second slot). If you have a full height slot, both serial ports use only one slot. There is a molex power connector on the board, but I didn't use it. There's a setting to send 5V, 12V, or no voltage over pin 9. By default it's set to no voltage. It doesn't seem like you need to use the molex power adapter if you're not sending power over pin 9. The manual makes it seem like it's optional even if you do send power over pin 9. There are pins on the board for a parallel port but the ribbon cable and parallel port bracket is not included.After installing, I just ran the latest driver from the website. I set the port settings and away I went. Since I installed it and set it up, I've had zero issues.
Fred Reed
2025-06-23 14:32:43
I bought this card to use with a new computer running Windows 7, 64-bit. I discovered that there was a problem with my RS-232 software losing the connection to the serial port after a while. After re-installing the drivers, everything was OK for a while, and then the connection would be lost again. This happened with two different software packages, so I think the software is ok.In all fairness - StarTech's tech support was quite responsive, but they reached a conclusion that the problem is at my end - it may be their driver or Windows 7 x64. They say they have no issues with the driver in their lab, so, perhaps it is a Windows issue. The product quality is good, and they shipped promptly; but, if anyone plans to use this with Win 7 x64, be careful to test everything for proper operation before Amazon's return period expires.
ASCOT
2025-06-11 10:27:06
Malgré 2 échanges et appel du supportCette carte ne fonctionne pas sur des PC Dell avec Windows 8.1 Pro ...
Mr Wood
2025-05-16 13:37:26
Like many similar cards, the description doesn't mention using the card with Windows 11. I contacted Star Tech support and they said it was compatible.After installing the card, I ran the Windows 8/10 64 bit driver and it works correctly under Windows 11 Pro.Not the cheapest of cards, but at least (a) it works under Windows 11 and (b) there is fast support for any issues.Highly recommended
BigCookie
2025-04-30 18:34:21
Treiber scheinen nicht gut zu Win10 zu passen. Habe eine neuen Komplettcomputer für meine Familie gekauft. Da wir eine RS232 Schnittstelle benötigen, wollte ich etwas gutes kaufen, aber sobald der Original-Treiber installiert war und das Gerät eingebaut, gibt es nur noch BlueScreens. Ohne Treiber war noch alles normal (Win starte, Aufforderung zur Installation etc).Daher kann ich nur abraten. Ein Produtkt der Konkurrenz (Sienoc) für 1/4 des Preises tat dagegen problemlos.
Customer
2025-04-21 17:53:56
Perfectly fine card, does what it says on the tin. Very slightly uneasy fit in the PCIe slot but it works.Thing to watch for: Windows 7 will offer a driver from Windows Updates which *appears* to support the card and installs and gives you COM port devices, but the driver (which is from 2010) doesn't function correctly or pass serial data. The driver on the supplied mini CD works.
Customer
2025-01-10 15:20:02
ok
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