SYBA PCI-Express 2-Port DB9 RS232 Serial Card with Low Profile Bracket - RoHS Model SD-PEX15022

Pros: Plug and play in Linux works perfectly. I use it with minicom to manage my PFSENSE gateway/firewall/router.

Cons: There are no cons with this product, works as advertised and works great in my half height case with the included low profile brackets.

Overall Review: None

Pros: The card offers the ability to add RS232 to a PCIe slot. Works well for running legacy scientific equipment (when it works).

Cons: After installing the card and drivers, I tested the card (I used it to acquire data from a piece of laboratory equipment that only has RS232 output) to see how it performed when acquiring data for 6 hours straight. During the initial test, and every subsequent test, the card would lose communication with the measurement device. As a sanity check, I connected the lab equipment to a computer with onboard RS232 support and saw no problems that I could pin to the lab equipment. I tried to troubleshoot the product for about 1 week before deciding that the lab technicians would not have the time to attempt to troubleshoot the card after every single test, and would also be restricted to tests lasting only 2 or 3 hours. I was extremely disappointed by the product. I ended up going with a USB 2.0 adapter instead, which has given me no trouble at all over the last two weeks.

Overall Review: This card may work for some applications, but is not suitable for laboratory equipment that acquires data for days at a time at a rate of 1000 data points per second. Even lowering my measurement acquisition rate would not allow me to conduct measurements over the time period that I require for my experiments.