83005257 250GB SATA II drive in removable sled for U320/4000 Series 83005258 500GB SATA II drive in removable sled for U320/4000 Series 83005259 750GB SATA II drive in removable sled for U320/4000 Series 83005260 1,000GB SATA II drive in removable sled for U320/4000 Series 83005257 CIPRICO 250GB SATA HARD DRIVE WITH SLED 83005257$148.95 83005258 CIPRICO 500GB SATA HARD DRIVE WITH SLED 83005258$221.20 83005259 CIPRICO 750GB SATA HARD DRIVE WITH SLED 83005259$349.95 83005260 CIPRICO 1000GB SATA HARD DRIVE WITH SLED 83005260$558.75