I had originally bought the cheaper adapter on Amazon that didn't have a master/slave jumper. It worked fine for me in my TSOP flashed XBOX, however it would take an extra 30 seconds or so on boot before it would continue booting. I had originally thought it was just a a fact of life using a 2TB SATA drive, maybe extra spin up or initialization time or something. Then one day while working on an LED mod I had the XBOX apart and the DVD drive disconnected. Magically it booted immediately! Turns out the problem was the adapter defaulting to cable select, which took the extra 30-45 seconds to det