Q Why do I get an Error Code 10 (Yellow Exclamation Mark) after I installed the latest driver?
A If you are getting an Error Code 10 with a yellow exclamation mark in Device Manager after installing the latest Prolific PL-2303 driver, please contact the cable maker of your product for Prolific chip validity and support. Prolific strongly recommend to only purchase USB-to-Serial cables from company-branded products providing technical support. It is not advisable to buy from unknown cable makers (no-brand cables) made in China. Prolific does not manufacturer any end-product cables and will not provide direct support to end-users.