Mobile professionals who frequently carry sensitive data on external hard drives need top-notch security, and the Lenovo delivers that in spades with the ThinkPad USB Secure Hard Drive.

Full disk encryption; Fast read speed; Classic ThinkPad design

Relatively bulky; Mediocre write speed

If you or your company takes data safety seriously, you should take an equally serious look at the Lenovo ThinkPad USB Portable Secure Hard Drive. Its prosaic name is matched with prosaic design: the square-edged, matt black case is enlivened only by the numeric keypad that sits atop it.

Good hard drive, easy to use. My job requires HDD with encryption and safety features, for compliance purposes. This suits my needs and is approved by corporate.

This external hard drive from Lenovo encrypts all the data you store on it and features a number pad on its casing to provide access. We evaluate it for performance and value.

In 1980, storing gigabytes (GB) of data required refrigerator-sized disk storage devices like the IBM 3380s – at a cost of tens of thousands of pounds! Today, hundreds of GB can be stored on portable external hard drives no bigger than a book at a cost of less than a hundred pounds.

Great product. Small, very easy to use. Easy to secure. Everything you could want for external storage. Cannot fault.

You can never have too much storage capacity. For years, external USB hard drives have been the cheap, portable, and convenient answer for people looking to goose their gigabytes without cracking open their computers.

320 gigs of storage for your sensitive data, secured with NSA-level encryption - you can't so much as view a thumbnail without punching the proper numerical code into the keypad; Sturdy build

Setting up and changing pass codes is a chore; Disconnecting drive is tricky on some operating systems (cough, Vista, cough); Wildly expensive compared with regular drives of similar capacity - but if you need this much security, MI5 is probably footing the bill

We're impressed by the Lenovo ThinkPad USB Secure Hard Drive's burly security features and rigorous performance results, but the bloated price tag prevents us from recommending it to anyone other than business consumers.

Easy-to-use security keypad; integrated USB cord; includes extra power plug; quick transfer speeds

Boring design; no FireWire support; expensive cost per gigabyte

The 320GB Lenovo ThinkPad USB Secure Hard Drive's is an external hard drive that takes a tactile approach to security; users must input a passcode on the built-in keypad before the drive will let them access its contents.

Easy-to-use security keypad; integrated USB cord; includes extra power plug; quick transfer speeds

Boring design; no FireWire support; expensive cost per gigabyte

Highly Compatible; Quiet

Account Setup a Pain; Difficult To Install