Got a ST3500320AS HDD that seems to have BSY error. I've made a RS232 cable and it tests okay, also tests on another couple of drives but when I connect it to the 3500320AS I just get a character on the terminal and nothing else Control-Z doesnt work. Only thing I have not tried is using a proper SATA power cable not a 4-pin molex one on this drive. Anyone who done a 3500320AS can you confirm if you need a proper SATA power?