Review on 🌟 StarTech.com 4 Port PCIe RS232 Serial Adapter Card - Single-Lane PCI Express - Breakout Cable - RS232 Extension - PCIe Serial Card (PEX4S553B), red by Juan Russell

I tried another quad port box from another company on my Win 10 high end PC but couldn't get it to work. This device with the declared support for Win 10 worked perfectly. As a side note, you need to install the driver from the device settings for each of the four ports. Only lasts a minute. And to set up the ports, disable all USB devices that can use the serial converter and get the COM port number. Then restart the computer, then go to System devices, select the port, advanced and select the COM port number. at our choice. Then reconnect all USB devices and let them remap as needed. I use this for amateur radios and it has worked flawlessly so far.