I have two of these and I think they are great external enclosures.
StorTecc PM-350U2-ECB V4 Black Smart Backup USB 2.0 Dual Fan Aluminum External Enclosure for 3.5 Inch HDD, w/ Tri-Color LED - RETAIL
Price:$26.99 plus shipping of about $6 or so (but no tax)
Supports up to 400GB Hard Disk Drives
This is an external enclosure that combines the best of all worlds. First it comes with proprietary patented Ultra Low Noise Dual Ball Bearing Fan, in an aluminum enclosure! It uses the latest Cypress Semiconductor AT2 Chipset that supports up to 400GB HDD. Combine dual fan technology with aluminum construction for the ultimate in external enclosure cooling. High tech easy Pull-Out Anti-Shock design make this the easiest ever enclosure to install. This is truly one of the best enclosures on the market today!
Key Features:
Dual Ultra Low Noise Ball Bearing Fans
Tri Color LED
All Aluminum Casing w/ Plastic Front End Fan Grill
Cypress Semiconductor Chipset
This USB2.0 External Enclosure uses the latest AT2 MicroChip for Mass Storage
Supports up to 400GB HDD.
High-Tech Easy Pull-Out Tray w/ Anti-Shock Design
Proprietary pull-out design make this the easiest enclosure to install
Operates at high (480-Mbps) or full (12-Mbps) speed
Supports 48-bit addressing for large hard drives
Converts IDE drive to USB 2.0 drive.
Support for MAC OS 9.0 or later and Windows 98SE, ME, 2000 and XP.
Hot Swappable, Plug & Play features
Vertical Standing Capability
On/Off Switch
Package Contents:
Enclosure with external power supply
USB 2.0 A-B cable
AC Power Cord
Driver CD
Vertical Stand
Screw sets for installing storage devices.
Specifications:
Size: 9.5"(L) x 5.25"(W) x 1.75"(H) (Approximate)
Power Supply: 100-240V, 50/60HZ, 2A