The 250GB 3.5" Caviar SE EIDE ATA-100 Internal Hard Drive for Desktops - 7200rpm from Western Digital is a high-capacity internal drive. Boasting an ATA interface that allows for burst transfer rates of up to 100MB/sec, a large 8MB data buffer and a rotation speed of 7200rpm, this drive is an excellent solution for adding storage capacity to your desktop workstation.