Intel DH55HC Product Guide

Installing and Replacing Desktop Board Components
51
Figure 23, J shows the location of the front panel USB 2.0 header (with Intel Z-U130
USB Solid-State Drive (or Compatible Device) Support) and Table 14 shows its pin
assignments and signal names.
Table 14. Front Panel USB Header (with Intel Z-U130 USB Solid-State Drive
(or Compatible Device) Support) Signal Names
Pin Signal Name Pin Signal Name
1
+5 VDC
2
+5 VDC
3
D-
4
D-
5
D+
6
D+
7
Ground
8
Ground
9
KEY (no pin)
10
LED#
NOTE
Computer systems that have an unshielded cable attached to a USB port might not
meet FCC Class B requirements, even if no device or a low-speed USB device is
attached to the cable. Use a shielded cable that meets the requirements for a
full-speed USB device.
Serial Header
Figure 23, K shows the location of the serial header. Table 15 shows the pin
assignments and signal names for the serial header.
Table 15. Serial Port Header
Pin Signal Name Pin Signal Name
1 DCD (Data Carrier Detect) 2 RXD# (Receive Data)
3 TXD# (Transmit Data) 4 DTR (Data Terminal Ready)
5 Ground 6 DSR (Data Set Ready)
7 RTS (Request To Send) 8 CTS (Clear To Send)
9 RI (Ring Indicator) 10 Key (no pin)

Intel DH55HC Specifications

General

Form Factor	MicroATX
Socket	LGA 1156
Memory Type	DDR3
Memory Slots	4
Max Memory	16 GB
PCI Express x16	1
PCIe 2.0 x1 Slots	2
PCI Slots	1
VGA	1
DVI-D	1
HDMI	1
Audio Codec	Realtek ALC888S
Chipset	Intel H55 Express
Memory Standard	DDR3 1333/1066
SATA Ports	6
USB Ports	12 x USB 2.0
Audio	Realtek ALC888S
LAN	Intel 82578DC Gigabit Ethernet Controller