Chapter 2: Installation 2-6 Connecting Cables ATX/Auxiliary Power Connectors A 24-pin main power connector is located at J40. This power connector meet the SSI EPS 12V specification. See the table on the right for pin definitions. 4-pin CPU Power Connector A 4-pin 12V power connector is located at J41 on the motherboard.
This power connector also meets the SSI EPS 12V specification, and is required to 24-pin ATX PWR J12 CD-IN JPAC PCI1 Buzzer Slot4 PCI-33MHz COM4 USB 10 JWOL J3 IDE#1 ITE 8213 COM3 J45 J44 FP USB 8/9 JPUSB2 JWD JLED FAN2 CD1 Front Audio J9 SPEAKER SPKR J15 J14 J47 FP USB 6/7 2-13 ATX Power 24-pin Connector Pin Definitions Pin# Definition Pin # Definition 13 +3.3V 1 +3.3V 14 -12V 2 +3.3V 15 COM 3 COM 16 PS ON _ 4 +5V 17 COM 5 COM 18 COM 6 +5V 19 COM 7 COM 20 Res (NC ) 8 PWR OK _ 21 +5V 9 5VSB 22 +5V 10 +12V 23 +5V 11 +12V 24 COM 12 +3.3V 12V 4-pin Power Con- nector Pin Definitions Pins Definition 1 and 2 Ground B 3 and 4 J41 CPU Fan KB/MOUSE FAN1 4-Pin PWR J28 LGA 775 CPU JPT1 I/O 2 W83627DHG S I/O 1 W83627DHG COM1 S J31 PWR VGA COM2 ATX DIMM1A DIMM2A DIMM1B DIMM2B 24-pin JGS1 JFSB1 JFSB2 J43 2U /S 3/ B 4 /5 Intel Q35 JPUSB1 USB 0,1 LAN 1 J11 JFSB3 Audio Fan3 J46 LAN CTRL Slot7 PCI-E x16 PCI3 JWOR Slot6 PCI-33MHz C2SBM-Q PCI1 JJII22CC21 II -- SS AA TT AA 10 JS1 JPL1 Intel ICH9DO JS2 Slot5 PCI-E x4 Battery JBT1 I-SATA2LE PCI2 JS3 I-SATA3 JS4 Audio CTRL JP2 IDE CTRL 3 and 4 +12V J28 VGA COM1 J31 DIMM1A DIMM2A