Ucom 704 Driver Download Free Access

Yes, Prolific and Microsoft provide it free of charge. Never pay for a serial driver.

If the driver installs but shows "This device cannot start (Code 10)" : ucom 704 driver download free

The UCOM 703, 705, and 706 also use the same PL-2303 driver. This guide applies to the entire UCOM USB-to-serial series. Yes, Prolific and Microsoft provide it free of charge

Reboot if prompted.

Confirm the device appears under “Ports (COM & LPT)” with an assigned COM number.