Hello, I'm working with a PL2303 device and I had an issue with the driver. Basically, I can't set the baudrate to 250kbps, but everything is better explained here: http://stackoverflow.com/questions/17000078/prolific-pl2303-serial-port-to-250000bps I think that removing lines from 332 to 348 of the driver the device will work even with non-standard (but common in embedded devices) baudrates. Baudrates standards were set a long time ago to use the same clock to generate human-compatible timing, for example with 32.768kHz crystals. Nowadays, crystals come mostly in round numbers, and the Prolific device makes no exception, having a 12MHz clock. In all my embedded project I'm running these non-standard baudrates for that same reason. I don't see any negative effects that may derive from this modification, but please let me know if there are any. Best regards -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html