Apple Mac OS X The driver below only supports the Prolific-based adapters supplied by Serialio How To Program A 8086 Microprocessor. .com. Supports all OS X systems from 10.1 through 10.6 - Intel and PPC-based systems 'Universal Binary' (UB) Release Date: Supports all OS X 10.7 'Lion' - Intel-based systems Release Date: The driver below only supports the FTDI-based adapters supplied by Serialio.com.. Supports OS X systems from 10.1 through 10.8 'Mountain Lion' - Intel and PPC-based systems 'Universal Binary' (UB) Release Date: See notes. Apple Mac OS 8 and 9 The driver below only supports the Prolific-based adapters supplied by Serialio.com. PL-2303 drivers (ver 1.2.0) for Mac OS 8.x and OS 9.x Release Date: Linux Linux with kernel 2.4 and later has drivers built-in (virtually all Linux machines shipping since early 2000's use the 2.4 kernel and later).

The driver says it installed. I then do a reboot. After system is up, I plugged in the cable. Windows detects I inserted the USB and displays the searching for drivers dialog. Odd I thought. I click to watch the status and it ends with the message: 'Prolific USB to serial comm port (COM4) - Failed' In device manager it shows a question mark next to it.