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Technical Details for Western Digital Caviar WD400BB 40 GB
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| General | |
| Device Type | Hard drive - internal |
| Width | 10.2 cm |
| Depth | 14.7 cm |
| Height | 2.6 cm |
| Weight | 0.6 kg |
| Localisation | English |
| Hard Drive | |
| Form Factor | 3.5" x 1/3H |
| Capacity | 40 GB |
| Interface Type | ATA-100 |
| Buffer Size | 2 MB |
| Compliant Standards | S.M.A.R.T. |
| Performance | |
| Drive Transfer Rate | 100 MBps (external) |
| Internal Data Rate | 50 MBps |
| Seek Time | 8.9 ms (average) / 18 ms (max) |
| Track-to-Track Seek Time | 2 ms |
| Average Latency | 4.2 ms |
| Spindle Speed | 7200 rpm |
| Configuration | |
| Sectors per Track | 63 |
| Bytes per Sector | 512 |
| Reliability | |
| Non-Recoverable Errors | 1 per 10^14 |
| Start / Stop Cycles | 40,000 |
| Expansion / Connectivity | |
| Connections | 1 x storage - ATA-100 - 40 PIN IDC |
| Compatible Bays | 1 x internal - 3.5" x 1/3H |
| Miscellaneous | |
| Mounting Kit | Included |
| Package Type | Retail |
| Software / System Requirements | |
| Software Included | Drivers & Utilities |
| Environmental Parameters | |
| Min Operating Temperature | 5 °C |
| Max Operating Temperature | 55 °C |
| Humidity Range Operating | 5 - 85% |
| Shock Tolerance | 20 g @ 2ms half-sine pulse (operating) / 250 g @ 2ms half-sine pulse (non-operating) |
| Vibration Tolerance | 0.25 g @ 5-500 Hz (operating) / 4 g @ 20-500 Hz (non-operating) |
| Sound Emission | 35 dBA |
| Max Altitude Operating | 3 km |



