2-24
Chapter 2: Hardware Information
3. Hard disk activity LED connector (4-pin HDLED1)
ThisLEDconnectorisforthestorageadd-oncardcableconnectedtotheSATAor
SAS add-on card. The read or write activities of any device connected to the SATA or
SASadd-oncardcausesthefrontpanelLEDtolightup.
4. USB 2.0 connectors (5-1 pin USB14; 10-1 USB78)
TheseconnectorsallowyoutoconnectaUSB2.0moduleforadditionalUSB2.0front
orrearpanelports.TheseUSBconnectorscomplywithUSB2.0specicationthat
supportsupto480Mbpsconnectionspeed.