Ch352ss Ea3 Driver Apr 2026

I’ve been seeing a lot of scattered questions lately regarding the Ch352ss Ea3 driver. If you landed here, you probably just bought a no-name PCI/PCIe serial (RS-232) or parallel (LPT) card off Amazon or eBay, the included mini-CD was either blank or corrupted, and Windows is showing a yellow exclamation mark for an "Unknown Device."

if you're still stuck, and I'll link the exact .inf file you need. Let's archive this before the driver CDs rot away completely. Ch352ss Ea3 Driver

| Symptom | Likely Fix | |--------|-------------| | Driver installs but ports don't work | Go to BIOS → Disable onboard COM1/COM2 | | Blue screen (BSOD) after install | Uninstall, then use the CH352_Win10_fix driver (disables parallel port in INF) | | Parallel port works, serial doesn't | Check jumper settings on the card – some need a jumper to enable 5V/12V on pin 9 | | Error 10 (Device cannot start) | Manually set I/O range in registry (not recommended – just return the card and buy a Startech) | I’ve been seeing a lot of scattered questions