Also, for $45 more you can go for a combo deal with the SAMSUNG Spinpoint 750GB 7200 RPM SATA 3.0Gb/s 3.5" Hard Drive.
Newegg.com - Intel Entry Storage System SS4200-E NAS Server w/ Intel Celeron 420 1.6GHz, DDR2 512MB & eSATA support - Server Systems
Brand Intel
Model SS4200-E
Processor
CPU Type Intel Celeron Processor 420 running at 1.6 GHz
MAX Processors 1
Memory
Installed Memory Size 512 MB
Memory Type DDR2
Storage
HDD Interface SATA II
Raid Level RAID 0 , RAID 1 , RAID 10 , RAID 5
Max HDD Capacity 4.0TB
Networking
LAN Ports One Intel Gigabit LAN port
Expansion
Other ports USB 2.0
eSATA
Power
Power Characteristics 250W PSU
Physical Spec
Temperature 10 - 35° C
Humidity Up to 90% non-condensing
Features
Features Supports up to four 3.5" SATA (3.0 Gb/s) Hard Disks
eSATA support to expand beyond four hard disk drives
Disk-on-module socket
Intel Entry Storage System SS4200-E NAS Server $149.99 at newegg 
