Product Description 
 13 
Table 3.  Components Shown in Figure 1 
Item/callout from Figure 1  Description 
A 
Auxiliary rear fan connector  
B 
ATAPI CD-ROM connector (optional) 
C 
Audio codec 
D 
Front panel audio connector 
E 
Secondary PCI Express x16/x4 bus add-in card connector 
F 
Gigabit Ethernet Controller 
G 
PCI Express x16 bus add-in card connector 
H 
Back panel connectors 
I 
Processor power connector 
J 
Alternate power connector (optional) 
K 
Rear chassis fan connector 
L 
LGA775 processor socket 
M 
Intel
 
82955X MCH 
N 
Processor fan connector 
O 
Intel
 
82801GR I/O Controller Hub (ICH7-R) 
P 
DIMM Channel A sockets [2] 
Q 
DIMM Channel B sockets [2] 
R 
I/O controller 
S 
Power connector 
T 
Diskette drive connector 
U 
Parallel ATE IDE connector 
V 
Battery 
W 
Front chassis fan connector 
X 
BIOS Setup configuration jumper block 
Y 
Firmware Hub (FWH) 
Z 
Chassis intrusion connector 
AA 
Serial ATA connectors (ICH7-R RAID) [4] 
BB 
Front panel USB connectors [2] 
CC 
Auxiliary  front panel power LED connector 
DD 
Front panel connector 
EE 
SCSI Hard Drive Activity LED (optional) 
FF 
Auxiliary power output connector (optional) 
GG 
Serial ATA RAID controller (Discrete RAID) (optional) 
HH 
Serial ATA RAID connectors (Discrete RAID) (optional) [4] 
II 
IEEE-1394a/b front panel connectors [2] 
JJ 
IEEE-1394a/b PHY component (optional) 
KK 
IEEE-1394a/b Link component (optional) 
LL 
SPI Flash device 
MM 
PCI Conventional bus add-in card connectors [3] 
NN 
Speaker 
OO 
PCI Express x1 bus add-in card connector