Note: When upgrading 667 MHz, 733 MHz, 800 MHz, 866 MHz, or 933 MHz models to 1.0 GHz, the Compaq ProLiant DL380 Thermal Upgrade Kit (210818-B21) is required.
Note: This processor option kit (PN 187602-B21) supports the ProLiant DL380, ProLiant ML370, and ProLiant CL380 servers.