Western Digital WD5000ABYS 500GB Hard Drive Drive Type: Internal,Capacity: 500 GB Interface: Serial ATA-300,Interface Type: SATA Spindle Speed (RPM): 7200 Buffer Memory: 16MB,Average Seek (msec): 8.9 Average Latency (msec): 4.2 Data Transfer Rate on Serial ATA: Up to 3000 Mb/sec Form Factor: 3.5" Temperature, Operating (C): 5 to 55 Temperature, Nonoperating (C): -40 to 65