I think your problem is that you're using an Xbox 1 drives instead of an Xbox 360 drive... a quick look at the Xbox 1 DVD drive pin out and by pluging that drive in through the adapter you're essentially crossing Ground and 12V
Xbox 1 pinout
01 +12V
02 +5V
03 GND
04 NEJECT
05 TRAY_OUT
06 CD_READY
07 TRAY_IN
08 SER_DATA
09 +12V
10 +5V
11 GND
12 GND
Xbox 360 pinout
01 NC
02 NC
03 NEJECT
04 Tray Status
05 GND
06 +3.3V
07 GND
08 +5V
09 GND
10 +12V
11 GND
12 +12V
Looking at the socket in the back of the dive pin 1 is top left, pin 2 is below it... etc.
Compare pins 9-12 on the two there, you're pretty lucky your PC (or your Xbox 1 drive) hasn't gone up in a ball of smoke.
Take note that just because a connector is the same shape DOES NOT mean that it's compatable. They tend to make things unique in the consumer world to keep out stupid people making stupid mistakes but once you go inside all bets are off.
This post has been edited by twistedsymphony: Aug 9 2006, 01:37 PM