IBM 146.8GB Ultra160 SCSI hot-swap HDD. Hard drive capacity: 146.8 GB, Hard drive size: 88.9 mm (3.5 "), Hard drive rotational speed: 10000 RPM. Weight: 780 g, Height: 25.4 mm, Width: 101.6 mm. Operating temperature range (T-T): 10 - 35 °C, Operating relative humidity range: 8 - 80 %