I lost my power adapter for my Simpletech Pininfarina 500GB external hard drive. On the back it says: BOM No. 96300-41001-013 What do I need to look for in a transformer? One person said 12V 2amp center pin positive transformer. Does that seem correct?

I have the same devise. The AC Adapter has this description on it: MODEL S120S150A3; INPUT: 100V-240V ac 50/60Hz 450mA Max; OUTPUT: 12V 1. 5A

Try to find a replacement on ebay, amazon, or contact Simpletech Support.

I THINK THERE IS NO POWER ADAPTER COMES WITH THIS DIVICE IT ACTUALLY PULLS IN POWER FROM USB U JUST NEED TO FIND THE POWEWR CABLE FROM THE USB .

You will need a 12V, 2A tip positive power supply. You can easily find one at Radio Shack or Best Buy, etc.

The power adapter for the SimpleDrive is 12V, 2A, with center pin positive. I hope this helps.

You may have a power supply that is defective or is failing. Try another power supply, 12V, 2A, center pin positive.

Hope this helps
http://www.simpletech.com/support/support_downloads.php

The original power supply is "SB2D-020-1HA SIMPLETECH AC ADAPTER 12V 1.5A FOR EXTERNAL HARD DRIVE" . Just find a replacement with the correct size plug (center positive) that supplies 12v DC at 1.5amps (1500ma)

Output 12VDC 1.5amps or greater 1500mA

Center conductor positive.

Actually the simpletech dosent need power adapters so u dont need to check for adapters and if you are connecting to usb2 port the power should be embaded so just connect the single usb cable not the both if using usb 1 then connect the both usb cable to usb port if u have already done this please try to change the usb cables wich is connecting the hdd and the pc something wrog in the cable for sure
thanks