Samsung Spinpoint M 640GB HDD 2.5" Serial ATA II

HM321HI, HDD, 640GB, SATA II, 8MB, 5400rpm, 105g

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Key Features
- Max. 320 GB formatted capacity per disk.
- Serial ATA 3.0Gbps Interface Support.
- SATA Native Command Queuing Feature.
- TuMR/PMR head with FOD technology.
- Load/Unload Head Technology.
- ATA Security Mode Feature Set.
- ATA S.M.A.R.T. Feature Set.

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Features
Bytes per sector	512
Average latency	12 ms
Storage drive buffer size	8 MB
Type	HDD
Interface	Serial ATA II
HDD speed	5400 RPM
HDD capacity	640 GB
HDD size	2.5"

Power
Start-up current	1000 A
Operating voltage	5 V
Power consumption (off)	0.2 W
Power consumption (standby)	0.25 W
Power consumption (typical)	2.5 W

General
Product family	Spinpoint M

Operational conditions
Non-operating shock	900 G
Operating shock	400 G
Non-operating altitude	-400 - 15000 m
Operating altitude	-300 - 3000 m
Operating vibration	1.5 G
Storage relative humidity (H-H)	5 - 95%
Operating relative humidity (H-H)	5 - 90%
Storage temperature (T-T)	-40 - 70 °C
Operating temperature (T-T)	5 - 55 °C

Weight & dimensions
Weight	105 g
Height	9.5 mm
Depth	100 mm
Width	69.8 mm

Other features
Drive ready time	4 s