External drives that run off USB power alone tend to be significantly slower transferring data. If it is mainly for backup or extra storage purposes, you're better off with a desktop external hard drive with its wall wart. Some USB-powered drives also need two USB ports to have enough power to operate, which is something to consider.
fluffy (rep: 2.2k) posted Aug 28, 2012
@fluffy, I did not know that but the purpose of the HD I had was for it to be portable. It was nice to have it in a small pouch and just go - no bulky adapters to carry around.
I had the Western Digital Elements SE (until I lost it somewhere... still MIA) 1 TB. It ran on USB 2.0 though. No problems. My boyfriend has the sleeker looking, more current one called the Passport. Runs on 3.0/2.0 and if you can get a deal on it for 1 TB, should be around $85
arsiel (rep: 13.1k) posted Aug 28, 2012
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