Western Digital Caviar 250GB SATA Hard Drive 16 MB Cache (WD2500KS) Product Description WD Caviar SE16 WD2500KS - hard drive - 250 GB - SATA-300Type Hard drive - intern Form Factor 3.5" x 1/3H Dimensions (WxDxH) 4 in x 5.8 in x 1 in Weight 1.3 lbs Capacity 250 GB Interface Type Serial ATA-300 Data Transfer Rate 300 MBps Average Seek Time 8.9 ms Spindle Speed 7200 rpm Buffer Size 16 MB Manufacturer Warranty 3 years warranty