Intel Desktop Board DH55HC Technical Product Specification 
12   
Table 2.  Components Shown in Figure 1 
Item/callout 
from Figure 1 
 
Descript
ion 
A  Conventional PCI bus add-in card connector 
B  Conventional PCI bus add-in card connector 
C  Conventional PCI bus add-in card connector 
D  PCI Express x1 add-in card connector 
E Battery 
F  PCI Express x1 add-in card connector 
G  PCI Express x16 add-in card connector  
H  Back Panel Connectors 
I  12 V internal power connector (ATX12V)  
J  Rear chassis fan header 
K  LGA1156 processor socket  
L  Processor fan header  
M  DIMM Channel A sockets (2) 
N  DIMM Channel B sockets (2) 
O  Front chassis fan header  
P  Main power connector (2 x 12) 
Q  Chassis intrusion header 
R Intel
®
 Remote PC Assist header 
S  SATA connectors  
T  BIOS setup configuration jumper block  
U  Alternate front panel power LED header 
V  Front panel header  
W  Standby power LED  
X  Front panel USB headers (2) 
Y  Front panel USB header with support for an Intel Z-U130 USB Solid-State Drive (or 
compatible device)  
Z  Parallel port header  
AA  Intel H55 Express Chipset 
BB  Piezoelectric speaker  
CC  Serial port header  
DD  S/PDIF header  
EE  Front panel audio header  
FF  Internal mono speaker header