HP 15 Notebook PC HP 15 TouchSmart Notebook PC Compaq 15 Notebook PC Compaq 15 TouchSmart Notebook PC HP 250 G2 Notebook PC HP 255 G2 Notebook PC Maintenance and Service Guide

Hard drive specifications
1-TB* 750-GB*
(9.5 mm)
500-GB*
(7.0 mm)
320-GB*
(9.5 mm)
Dimensions
Height 9.5 mm 9.5 mm 7.0 mm or 9.5 mm 7.0 mm or 9.5 mm
Length 100.4 mm 100.4 mm 100.6 mm 100.4 mm
Width 69.9 mm 69.9 mm 70.1 mm 69.9 mm
Weight 115.0 g 115.0 g 92.0 g 98.8 g
Interface type SATA SATA SATA SATA
Transfer rate
Synchronous (maximum) 300 MB/sec 300 MB/sec 300 MB/sec 300 MB/sec
Security ATA security ATA security ATA security ATA security
Seek times (typical read, including setting)
Single track 1.4 ms 1.5 ms 3 ms 3 ms
Average (read/write) 10 ms 11 ms 13 ms 13 ms
Maximum 12 ms 14 ms 24 ms 24 ms
Logical blocks 1,938,921,461 1,465,149,168 1,048,576,000 625,142,448
Disk rotational speed 5400 rpm 5400 rpm 5400 rpm 5400 rpm
Operating temperature 0°C to 60°C (32°F to 140°F)
*1 GB = 1 billion bytes when referring to hard drive storage capacity. Actual accessible capacity is less.
NOTE: Certain restrictions and exclusions apply. Contact technical support for details.
Hard drive specifications 123