Intel Desktop Board DH55HC Technical Product Specification 
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Table 9.  Component-side Connectors and Headers Shown in Figure 10 
Item/callout 
from Figure 10 
 
Descript
ion 
A  PCI Conventional bus add-in card connector 
B  PCI Conventional bus add 
C  PCI Conventional bus add 
D  PCI Express x1 bus add-in card connector 
E  PCI Express x1 bus add-in card connector  
F  PCI Express x16 bus add-in card connector 
G  12 V internal power connector (ATX12V) 
H  Rear chassis fan header 
I  Processor fan header 
J  Front chassis fan header 
K  Main power connector (2 x 12) 
L  Chassis intrusion header 
M  Intel Remote PC Assist header 
N SATA connectors 
O  Alternate front panel power LED header 
P  Front panel header 
Q USB header 
R USB header 
S  USB header with support for an Intel Z-U130 USB Solid-State Drive (or compatible 
device) 
T  Parallel port header 
U  Serial port header 
V S/PDIF header 
W  Front panel audio header 
X  Internal mono speaker header