Western Digital My Book Premium Edition 400GB External Hard Drive

The good: The MyBook Premium edition is compact, employs an innovative design, has an external capacity gauge, comes with backup software, and is a speedy data reader.

The bad: The MyBook Premium edition is slow to write data, over both USB 2.0 and FireWire 400.

The bottom line: If write speed isn't a top priority, the Western Digital MyBook is a good deal at around $300 for a 500GB drive. It'll look good on your desk or bookshelf, too.

The Western Digital MyBook Premium Edition external hard drive is physically portable but still humongous in terms of capacity. The 500GB unit we tested offered the most mixed performance of any external hard drive we've tested. Though we love its design, capacity, and small size, we were a little disappointed with its overall performance. Direct competitors in this space include the Maxtor OneTouch III Basic (500GB), the Seagate Pushbutton Backup Drive (400GB), and the Iomega External Hard Drive (400GB). All these drives cost about the same, though the Iomega also offers FireWire 800 connections. All have backup software, as well. The Seagate drive was a slow performer, while the Iomega was speedy when transferring over FireWire but slow over USB 2.0.

• Drive type: external hard disk drive
• Available capacities: 160GB; 250GB; 320GB; 400GB; 500GB--all drives have a 7,200rpm hard disk drive
• Capacity of test unit: 500GB
• Cache: 16MB for the 400GB and 500GB drives; 8MB for the rest
• Dimension: 6.8 x 5.6 x 2.2 (HLD in inches); 2.6 pounds
• Notable design features: backup button; book-like design
• Connection options: FireWire 400, USB 2.0
• OSs supported: Windows 98 SE/Me/2000/XP or, Mac OS X 10.2.8+
• Software included: EMC Retrospect Express Backup and System Recovery Software (on drive)
• Additional features: capacity gauge: the backup button features an LED that indicates how much space is available on your drive; the drive turns itself off when not in use
• Service/support: one-year warranty; toll-free phone support: 9 a.m. to 7 p.m. from Monday through Thursday, 9 a.m. to 7 p.m. on Friday, and 8 a.m. to 5 p.m. CT on Saturday; e-mail support via an online form; Web site has a searchable knowledge base, FAQs, downloadable drivers, and software.

On CNET Labs' test bench, the 500GB MyBook was very sluggish when writing, via both FireWire 400 and USB 2.0 connections. The drive took almost 36 minutes to write our 10GB test folder, about three times slower than other hard drives with the same specs. On the other hand, in the read test, the MyBook drive took slightly less than 10 minutes to get the job done, which was the fastest among all of the external hard drives we've tested.

The Western Digital MyBook comes in a very sleek design that is shaped like a medium-size book and weighs about the same. It features a button in front that activates the bundled Retrospect backup software. The coolest thing about the MyBook drive is that the button has a round, blue LED ring around it that indicates the amount of space available on the hard drive.

Intro: This Western Digital My Book Premium Edition External Hard Drive is a 400GB, external hard disk drive.Compared to other external hard drives on the market, it is expensive at around $290.Connects via either FireWire or USB 2.0 for increased flexibility.This is a 7200 rpm drive and has a 16MB cache.

Noteworthy Features: Has a 400GB capacity, which is larger than some similarly priced hard drives.Also, this hard drive has a 16MB buffer, which is larger than some similarly priced hard drives.Connects to your PC via high speed USB 2.0 or FireWire cables.This product can also connect to older USB ports, but the transfer rates will be fairly slow.

Weaker Features: None noted, given available product data.

Suitability: An external hard drive, suited for convenient plug-and-play with most desktop or notebook computers.

Value: Despite its expensive price, this hard drive has good features for the money.