Been going through everything here trying to figure out the right setup for what I have but so far unsuccessful! Before I describve what I'm doing, I have searched and looked all over the internet but found no relevant information. I have a USB to TTL adaptor I bought from someone on ebay. There is no brand name on it, all I know about it is that it has the prolific chipset, then has connectors for rx, tx, gnd, 3.3 & 5v ... I have tried using it but whenever I use hyperterminal or putty I get an error saying it could not connect to com3 - I tried in XP and on my windows 7 machine but no go. Seems to be non function - would this be the right assessment? I also tested with a loop back (only with rx/tx connected together) and did nto get a reply but was able to send the data (as per the read out from 232analyzer). I went to radioshack to see what they had onhand and found a usb to ttl cable for scanner radios - has the ftdi232bm chip on it, successfully installed in windows 7 (and in windows xp) and can get the loopback working no problem. I'm assuming the other cable is a ground. I cannot get to the f3 > prompt to do anything to the drive - and it is a good, working drive i'm testing on! In the main guide i didn';t see anything really mentioned about grounding, but in the other read me it says to ground everything. I tried just using the sata power connecter from my desktop to the drive, then the rx/tx from the usb adaptor and got nothing. I then attached the ground from the adaptor to the drive, got nothing. Finally I grounded the adaptor to one of the black ground cables coming from a power connector in the computer, also grounded the hdd to the same one - so everything that has a ground is connected to the black ground cable from the PS in my desktop. still nothing. Any ideas? Also, would it be prudent of me to attach the ground from the usb to ttl (the one that throws the could not connect to comx error in hyperterminal and putty)to the negative on a pair of batteries and send the + on the batteries to the 3.3 on the usb adaptor? Unfortunatly the item I got from ebay did not have instructions or anything, only the part. The radio shack scanner cable i'm using is definitely ttl (loop back works) and is model number 20-047 ANY help is greatly appreciated!!