Seagate ST910004EXD101-RK 1TB Expansion USB 2.0 2.5 Inch Portable Hard Drive - Black

You may need a dual power lead for this portable.
Firstly great product hence the 5 stars but 1TB of disk space makes it power hungry and in certain scenarios a single usb lead is insufficient. If you're thinking of purchasing there is a proviso you should be aware of. See below my message to Seagate technical support team, hopefully they will rectify the inadequate usb cable, otherwise go and purchase a dual power lead cable from Amazon.

"The supplied short usb cable provides inadequate power to the 1TB Seagate Expansion Portable drive. Particularly if it's drawing power from PC the single usb cable is not up to the task. I was mistaken in thinking there was a problem with my portable hard disk and I returned product back to Amazon, who very kindly dispatched another and I duly received in the next couple of the days (excellent customer service, as always). I was reading on the Tech forum that certain portable hard disks require dual supply usb lead as some units require voltage in access of 500mva. I began to think that...

Seagate ST910004EXD101-RK 1TB Expansion USB 2.0 2.5 Inch Portable Hard Drive - Black

Do not buy is product
I purchased item because it seem to be good value for money, About 10months later the hhd Started making click noise, so i looked up reviews and common fault's and it is a Very Very common fault in this, So i rang seagate about replacing it under warranty and my data, So they quoted me between