| Label |
Description |
| A |
Auxiliary rear fan connector |
| B |
PCI Conventional bus add-in card connector |
| C |
PCI Express x16 (electrical x4) bus add-in card connector |
| D |
ATAPI CD-ROM connector (optional) |
| E |
PCI Conventional bus add-in card connector |
| F |
Secondary PCI Express x16 (electrical x8) bus add-in card connector |
| G |
Audio codec |
| H |
Front panel audio connector |
| I |
Primary PCI Express x16 (electrical x16 or x8) bus add-in card connector |
| J |
Gigabit Ethernet Controller |
| K |
Rear chassis fan connector |
| L |
Auxiliary PCI Express Graphics Power Connector (optional) |
| M |
Back panel connectors |
| N |
Processor power connector |
| O |
LGA775 processor socket |
| P |
Hardware monitoring and fan control ASIC |
| Q |
Intel 82975X MCH |
| R |
Intel® 82801G I/O Controller Hub (ICH7-R or ICH7-DH) |
| S |
DIMM Channel A sockets [2] |
| T |
Processor fan connector |
| U |
DIMM Channel B sockets [2] |
| V |
Legacy I/O controller |
| W |
Main power connector |
| X |
Diskette drive connector |
| Y |
BIOS Setup configuration jumper block |
| Z |
Parallel ATE IDE connector |
| AA |
Chassis intrusion connector |
| BB |
Battery |
| CC |
Serial ATA connectors (ICH7-R/ICH7-DH RAID) [2] |
| DD |
Speaker |
| EE |
Front chassis fan connector |
| FF |
Serial ATA connectors (ICH7-R/ICH7-DH RAID) [2] |
| GG |
Auxiliary front panel power LED connector |
| HH |
Front panel USB connectors [2] |
| II |
IEEE-1394a front panel connector |
| JJ |
Serial ATA RAID connectors (Discrete RAID) (optional) [4] |
| KK |
SCSI Hard Drive Activity LED connector (optional) |
| LL |
Front panel connector |
| MM |
IEEE-1394a controller (optional) |
| NN |
Serial ATA RAID controller (Discrete RAID) (optional) |
