Western Digital WD2500BEVE SCORPIO/ 2.5" EIDE/ 250GB/ 5400RPM/ 8MB CACHE

Low Power
Whisper Quiet
Rugged Design
WD Scorpio 2.5-inch drives offer fast performance and low power consumption, making them ideal for notebooks and other portable devices.

Overview
WD Scorpio delivers best-in-class performance with low power requirements comparable to much slower notebook drives. In addition, you'll get the quietest 2.5-inch drive on the market with real-time data protection technology to help keep your data safe.

Key Features
Fast and efficient - Spins at 5400 RPM for fast performance but has power specs similar to slower 4200 RPM drives. Low power consumption yields increased reliability.
Quiet - WD's exclusive WhisperDrive™ technology with SoftSeek™ algorithms make this the quietest 2.5-inch hard drive, regardless of spin speed.
Reliable - WD's ShockGuard™ technology protects the drive mechanics and platter surfaces from shocks. WD's DuraStep Ramp™ locks the heads in a secure position away from the disk to provide another layer of protection when the drive is not in use. Utilizing the most technologically advanced material available, the drive can perform a minimum of 600,000 load/unload cycles without contamination - up to twice the performance of its competitors.
Rugged - WD Scorpio's rigid stainless steel top cover withstands more than 5 pounds of pressure - nearly 1.5 times the industry average - without pinching vital internal components.
Ideal For Portable digital devices of all kinds, including notebook computers, portable external storage, digital audio, GPS systems, and tablet PCs.

Specifications
Performance Specifications
Rotational Speed 5,400 RPM (nominal)
Buffer Size 8 MB
Average Latency 5.50 ms (nominal)
Seek Times
Read Seek Time 12.0 ms
Track-To-Track Seek Time 2.0 ms (average)
Transfer Rates
Transfer Rate (Buffer To Disk) 421 Mbits/s (Max)
Buffer to Host (EIDE)
Mode 5 Ultra ATA 100 MB/s
Mode 4 Ultra ATA 66.6 MB/s
Mode 2 Ultra ATA 33.3 MB/s
Mode 4 PIO 16.6 MB/s
Mode 2 multi-word DMA 16.6 MB/s
Physical Specifications
Formatted Capacity 160,041 MB
Capacity 160 GB
Interface EIDE 100 MB/s
Physical Dimensions
English
Height 0.374 ±0.008 inch
Length 3.94 ±0.010 inch
Width 2.75 ±0.010 inch
Weight 0.26 Pounds
Metric
Height 9.5 ±0.20 mm
Length 100.2 ±0.25 mm
Width 69.85 ±0.25 mm
Weight 0.117 kg
Environmental Specifications
Acoustics
Idle Mode 20 dBA (average)
Seek Mode 0 21 dBA (average)
Temperature (English)
Operating 41° F to 140° F
Non-operating -40° F to 149° F
Temperature (Metric)
Operating 5° C to 60° C
Non-operating -40° C to 65° C
Humidity
Operating 8-90% RH non-condensing
Non-operating 5-95% RH non-condensing
Altitude (English)
Operating -1,000 feet to 10,000 feet
Non-operating -1,000 feet to 40,000 feet
Altitude (Metric)
Operating -305M to 3,050M
Non-operating -305M to 12,200M
Vibration
Operating
Linear 5-300 Hz, 1.0G (0 to peak)
Random 5-300 Hz (0.008 g² / Hz)
Electrical Specifications
Current Requirements
5 VDC
Read/Write 500 mA
Idle 400 mA
Standby 45 mA
Sleep 38 mA
Power Dissipation
Read/Write 2.50 Watts
Idle 2.00 Watts
Standby 0.23 Watts
Sleep 0.19 Watts