I use this coolmax:
It come with a power adapter needed to power 3.5" and 5.25" devices.
It works with my Lite-On LH-20A1S and my Samsung SH-203B. It also worked with my Samsung SH-183B (until I blew it up, see below).
The only thing to know is you can put the power adapter in backwards if you push too hard, because the connector isn’t great. If you do so, you will kill your drive (I did with my 183B). It didn’t seem to bother the Coolmax itself though! So be careful to put the connector in the right way.
This device works with 2.5" PATA, 3.5"/5.25" PATA and 2.5"/3.5"/5.25" SATA drives.
I recommend not installing the backup software that comes with it and thus ignoring the “backup” button on the device.