WDME1600TN - Western Digital My Passport Essential WDME1600TN Hard Drive - 160GB - 5400rpm - External - Retail My Passport Essential 160GB Portable USB Hard Drive, USB 2.0 cable, Quick Install guide. Installation is a snap because you don't really install this drive. Powered by the USB bus. No separate power supply is needed. This ultra-portable drive fits easily in your pocket or purse, weighs only a few ounces.