Western Digital Passport 40GB Portable USB External Hard Drive

# Dual-option Backup -- choose how and when to back up your data, automatically or on-the-spot
# USB 2.0 interface -- high-speed connection for maximum throughput
# Front-mounted power button -- equipped with WD's exclusive Safe Shutdown feature that ensures all data has been safely transferred before shutting down the drive
# 7200 RPM rotational speed
# Preformatted -- simply plug it in and go
# Capacity 120 GB
# Spindle Speed 7, 200 RPM
# Buffer Size 8 MB
# External Data Transfer Rate60 MBps
# Interface USB 2.0
# Seek Time 8.9 ms
# Average Latency 4.17 ms.