A: As of 2026, the last known official driver is 3.12.0.372 (Windows 11 certified). Community drivers go up to 4.0.0 (beta).
sudo apt update sudo apt install linux-modules-extra-$(uname -r) sudo modprobe -r pl2303 sudo modprobe pl2303 Check with: dmesg | grep pl2303 Q: Is SA9123L the same as PL2303? A: Not exactly, but they are electrically compatible. Most updated SA9123L drivers are modified PL2303 drivers. sa9123l driver updated
Check your current driver version right now by going to Device Manager → Ports → right-click → Properties → Driver tab. If the version number is below 3.10.0, it’s time to update. Have a unique issue with your SA9123L driver? Leave a comment below or visit the r/UsbSerial community for live support. A: As of 2026, the last known official driver is 3