At least 500 GB

Sizes: 63.50 x 63.50 When performance matters, you can rely on the Toshiba PX1828E-1HG5 Internal 2.5 SATA II Hard Drive to provide fantastic storage with a slim design that's packed with powerful technology. Excellent storage With high speed transfer rates you can rely on the PX1828E1HG5 for high quality storage, whilst the 750 GB capacity means you've got ample room to save your files. It is efficient to run and offers silent technology so you can keep your PC's noise levels down. Compact size The slim and sleek design makes it easy to introduce high capacity storage into your system, ideal for high performance computers. With a SATA II 3 GB/s connection you can also rely on the PX1828-E1HG5 for high speed data transfer. Slim, sleek storage is easy to achieve when you upgrade your hard... Less

Delightfully slim, the Seagate SGR39100 Slim Portable Hard Drive is an unbeatable storage solution. Ideal if you're a social networker, it is brimming with fantastic features. Slim design Compact and weighing under 200g, the SGR39100 Slim is perfect for taking everywhere with you. Whether you carry it in your bag or coat pocket, the slim design means it won't take up much space whilst providing 500 GB of storage space. Take your digital life with you wherever you go. Easy to use features Social network fans will love some of the superb new features of the SGR-39100 Slim . This hard drive makes it easy to upload your photos and files, letting you choose which files to upload, where you're going to upload to and even add comments, all from your hard drive. When you use the Share feature,... Less

Samsung's M2 Portable Series external hard disk drive is pushing the boundaries of portable digital storage in almost every dimension. It features a sleek new Scandinavian look, which is only 17.6mm thick and also boasting an anti-fingerprint and scratch surface, and therefore extremely easy to travel with. Other standout features include the new eco-friendly components, which are halogen free, and the optimised energy efficiency settings that help in lowering bills. Add to this the choice of colour and the whisper-quiet operation, and you have the ultimate external hard disk drive. Protect the Earth and your precious data at the same time. The M2 Portable Series external hard drive features Samsung's Eco Triangle technology. Compatible with windows xp/Vista/7, Mac OS X10.4.8 or later... Less

Offering high capacity in a compact drive, My Passport 1TB portable hard drive is the ideal companion for anyone with lots of files that they want to help protect and take on the road. The automatic backup software continually works quietly in the background - whenever you save or change a file, it's instantly backed up. Automatic backup software; USB powered; Sleek and compact design; Compatible with Windows XP, Windows Vista, Windows 7, Windows 8 (Can be reformatted for Mac OS X). Hardware encryption and password protection. Storage space 1TB: 76 hours of video, 250000 MP3s, 200000 photos. USB 2.0; High speed USB 3.0 connection; Plug and play; WD Smartware backup software software included. Includes USB 3.0/2.0 Cable, WD Smartware Backup Software CD and Quick Start Guide. Weight 0.19kg;... Less

The small, lightweight design offers high-capacity storage, making the Western Digital Elements 1TB portable hard drive the ideal companion for those who want to take their important files with them. For peace of mind, the portable hard drive has been built for durability, shock tolerance, and long-term reliability. USB 3.0 offers maximum data transfer rates. WD quality and reliability; USB powered; Compatible with Windows XP and upwards (can be reformatted for MAC OS X, Leopard, Snow Leopard or Lion). Storage space 1TB: 76 hours of video, 250000 MP3s, 200000 photos. USB 2.0; Plug and play; Includes USB 3.0/2.0 cable; Weight 0.21kg; Size L20.3, W7.8, D11.3cm; Manufacturer's 2 year guarantee; EAN/MPN/UPC/ISBN: 718037780566.

This desktop hard drive is a compact and stylish unit to hold all of your important music, videos, photos and documents. With backup software and password protection you can be sure that all of your important files are safe. Automatic backup software; Small footprint and stylish; Compatible with Windows XP, Windows Vista, Windows 7, Windows 8 (Can be reformatted for Mac OS Lion or Mountain Lion). Hardware encryption and password protection. Storage space 3TB: 230 hours of video, 750000 MP3s, 600000 photos. USB 2.0; High speed USB 3.0 connection; Plug and play; Includes Western Digital smartware backup software. Weight 1.01kg; Size L165, W48, D135cm; Manufacturer's 2 year guarantee; EAN/MPN/UPC/ISBN: 718037773568.

This desktop hard drive is a compact and stylish unit to hold all of your important music, videos, photos and documents. With backup software and password protection you can be sure that all of your important files are safe. Automatic backup software; Small footprint and stylish; Compatible with Windows XP, Windows Vista, Windows 7, Windows 8 (Can be reformatted for Mac OS Lion or Mountain Lion). Hardware encryption and password protection. Storage space 2TB: 150 hours of video, 500000 MP3s, 400000 photos. USB 2.0; High speed USB 3.0 connection; Plug and play; Includes Western Digital smartware backup software. Weight 0.88kg; Size L165, W48, D135cm; Manufacturer's 2 year guarantee; EAN/MPN/UPC/ISBN: 718037773551.