On Board Connectors: 1 x FDD; 24-pin ATX power connector; 8-pin ATX 12V power connector; 10 x Fan; 6-1 pin SMBus ; 2 x Front LAN LED Environment: Operation temperature: 10? ~ 35?; Non operation humidity: 20% ~ 90% ( Non condensing) Most Valuable Dual Opteron HPC Server Motherboard