I need to know how to use a 3.5 hard drive and connect it to the 2.5 cable in the expansion bay of my laptop. It does support a second hard drive (2.5) but I need to connect a 3.5 with a cable and adapter. I tried to use a 2.5 to 3.5 adapter that is normally used to go the other way and use a 2.5 in a pc. The kind with the small green board on it. I even powered the 3.5 from another computer to the power connector. The laptop won't recognize the 3.5 drive, I tried several known good 3.5 drives. But when I connect a 2.5 directly to the 44 pin 2.5 cable in the laptop, it works. I need to be able to connect a 3.5 for repair reasons. I do on site repairs of pcs and need to be able to use the pc to load programs on the 3.5's and make an image of the 3.5's when I am done for disaster recovery the next time. Any help would be greatly appreciated.