I'm trying to use the CA-42 cable but am having lots of trouble despite reading all 94 pages of this thread, the related blogs/posts, googling everything i can think of and going through all sorts of random forums. I just can't get the cable to work correctly in windows XP. The hardware ID is USB\Vid_067b&Pid_2303 I've tried a lot of different drivers for this chip (including prolific, arkmicro, others from forums). My cable is detected by windows, and the driver that seems to work best is the one off the Prolific website. However it always has the yellow exclamation mark and says device unable to start. It seems to select COM4, and I set its parameters correctly. Hyperterminal will not let me choose COM4 (as the drivers aren't working). Anyone have any advice or know some better drivers? I'm not sure what to do. I don't have any machines left with COM ports so need to try to get this USB working. My cable says made in china, SN: WTO48000317 It has 3 wires (white, green, blue). It's exactly the same as the one shown in this video: http://www.youtube.com/watch?v=29FztWJVxbM Even with the little red loop back wires. In the video he doesn't mention where he got his drivers from, but it shows Motorola Comp Modem drivers being installed. I've tried to find these but with no success so far. Thanks