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)

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.

Purchased to connect my Kenwood 2000 and my Kenwood 590s to my computer and be able to run programs from Kenwood and Ham Radio Deluxe. Unit comes in a full style profile and needs to be separated to connect to a low profile style computer. I have big hands so it was a PIA for me but got it done. Installed CD and looked for windows 11 64 bit driver. Ran setup and it was done. Both radios connected without issues. Just make sure to setup your port for the radio. Mine was 5 and 7. Also if you have no Cd player you can do a search for the driver on the CD and it will be available for download for free.

I struggled with USB to RS232 adaptors and drivers far too long. This board worked as soon as the driver were installed. Driver included on CD!

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 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.

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.

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

Excellent product to add to serial ports