Summary: Their were a lot of comment on these type of dual port cards with bad reviews and there weren't a lot to choose from. This one has been working find for 3 months now with no problems. I use it for two different modems in my alarm business. It saves me from using a A-B switch. I can now access my computer off premise and still connect through either modem without being there to switch them back and forth.
Summary: 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!!
Summary: I bought this Serial Card for a navigation computer for a fishing boat using MaxSea Time Zero software. This card works well with the low profile case and the plotter and sounder plugged into it. Data flow is great. Highly recommended for anyone looking for a serial card that works in Windows 7.
Pros: Works with Windows 7 64-bit, Drivers installed from Windows Update, Comes with Low Profile Brackets
Summary: Wen ordered this device and the documentation was sparce. There was no instruction on how to plug in the parallel port. (Normally the DIP header is labeled where pin 1 is. Or all DIP headers are oriented the same.) The circuit board was not labeled. There was a picture of the card with the Parallel cable plugged in on the front of the documentation. However, Pin 1 on the picture for the Parallel Port was opposite where pin 1 on the Serial Port was - very unusual.
Summary: 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.
Summary: Some older hardware devices simply will not work with a Serial to USB adapter. This works great under Windows, and will work on Linux without any need to install a driver, as long as you are using kernel 3.2 or beyond. My advice .. if you need to add a serial port, why not add two, all on one card. This is the one that will work without a hitch.