Were you blindfolded when looking? To re-cap: the HD accepts TTL level signals a USB-to-TTL or a RS232-to-TTL or a USB-to-RS232 AND a RS232-to-TLL interface is what is needed there are commercially available (or it is remarkably simple to autobuild) such interfaces, this thread is FULL of links to various models Most cellular phones, including Nokia ones, are also programmed through a TTL level interface. Thus, if you ALREADY have one of those cellular phone cables around and you don't use it anymore, it costs you nothing to see if it works. Buying a new one is NOT advised because: you have to open it and while doing so there is a probability you will break it there are several types of these cables some work, some DO NOT, some have NOT the "right" drivers, and when you buy one of them there is no practical way to know if it's the "good" type besides, some of these cables get their power from the USB port, whilst some get it (if I may one of the stoopidest ideas I've ever seen in my life ) from the actual phone battery, so you have to connect an additional battery to replace the power normally drawn from the phone There are SEVERAL posts in this thread about this issue, most notably an illustrated one here: http://www.msfn.org/board/solution-seagate...-page-1756.html More generally, the various tutorial are to be used as a cooking recipe should be: if you are a professional cook, or you have some experience in the field, you can use the recipe as a base and change doses and ingredients and vary cooking time, result will probably be edible. if you are not expert at this, you should not change anything and do exactly as it is written in the recipe you chose. This said there are as well SEVERAL reports of success using various original and non-original CA-42, a couple examples: http://www.msfn.org/board/solution-seagate...-page-1805.html http://www.msfn.org/board/solution-seagate...-page-1833.html Common point is that due (generally speaking ) to the lack of experience of users, when there is a report of failure it is sometime difficult to say whether a given cable is the problem or it is the way the user connected it (or failed to connect it) or whatever. jaclaz Well then can you reccomend a usb interface that I can use? I can't use a serial port. Hopefully something I don't need to provide my own 5v too...