2-Port PCI Express RS-232 DB9 Serial Port Card for Windows XP, Vista,7, 8.x, 10, 11 32/64bit and Linux PCs, PCIE RS232 Card, PCIE Serial DB9 Port Card (PCIE-SE2)

Works perfectly - If you are running Windows 11 you do not need to use the CD to install the driver - Just go to Windows Update and go to Advanced Options - Driver Updates (You will need to do this twice as the first update is for the controller, the 2nd update is for the COM Ports themselves).

I have been trying to get the CAT port on my old Yaesu FT-847 working for some time now. Putting a scope on the Rx pin of the radio I noticed that the levels seemed very low at about 3 volts. This was using a USB serial port CAT cable purchased specifically for this radio. I thought why not try a more traditional serial port and ordered this product. Installation went smoothly and my Windows 11 PC soon showed two new serial ports. Connecting one to the radio with a F-F null modem cable and initialized everything at 4800 baud. Bang just like that the CAT port lit up and started working. Looking at the levels on the scope, they are more like 10 volts now.

Still have a few peripherals that like a 9 pin serial port and updated the PC motherboard and OS. Installed like any other expansion card. PC booted and the device manager wanted a device driver. Drivers are on the included mini CD, could not find them online. Bravely selected the installation executable in the Windows 11 64 bit folder and zap, we have com ports. Package included a pair of low profile brackets if your case needs them. Now the ham radio connection works with no USB dongles. I might look up a parallel port card and get the Okidata Microline dot matrix printer online again too.

I had to install an extra patch from the AUR to get the ASIX AX99100 chip to work on a modern Arch Linux install, and I'm having trouble getting this to work in early userspace -- GRUB doesn't see it, and the driver is loaded late into kernel initialization (so it's trickier to get console= to work). Figured I would flag this for anyone else trying to use this for kernel console access.

I rarely write reviews, but this purchase deserves one.I was struggling trying to connect a Cisco Catalyst 3560 switch to be programmed to my 16 year old HP pavilion PC running Windows 10 Pro.I purchase a few adapters and cables on Amazon and they never worked, until I came across to this product and decided to buy it. Guess what, after a successful installation I was able to stabling communication from my pc to the Cisco making possible to be programmed.This product works if you know what you are doing.Thank you seller.

Win11. painless. Works as intended. Happy camper!

Was super happy with this port card. Needed to add a serial port for my church sign computer & this was the perfect choice. Easy install (windows 11). Easy connect back up & running. Affordable Money well spent

Built 5 Pcs for weigh stations that still use serial ports and they worked without issue, just had to install the drivers it came with.