63SpecificationsExternal ConnectorsNetwork adapter RJ45 connectorUSB two top‑panel, two front‑panel, and four back‑panel USB 2.0 compliantconnectorsAudio top panel — microphoneand headphoneconnectorsback panel — sixconnectors for 7.1 supportS/PDIF one digital S/PDIF (optical)connectoreSATA one back‑panel connectorDVI one 29‑pin connectorHDMI one 19‑pin connectorSystem Board ConnectorsMemory four 240‑pin connectorsPCI one 124‑pin connectorPCI Express x1 two 36‑pin connectorsPCI Express x16 one 164‑pin connectorPower (systemboard)one 24‑pin EPS 12 VconnectorChassis fan two 3‑pin connectorsProcessor fan one 4‑pin connectorUSB connectors four 9‑pin connectorsFront audioconnectorone 9‑pin connector for2‑channel stereo soundand microphoneSATA five 7‑pin connectorsS/PDIF out one 5‑pin connector