Intel DH55HC User Manual

Intel Desktop Board DH55HC Technical Product Specification
24
1.12.3 RJ-45 LAN Connector with Integrated LEDs
Two LEDs are built into the RJ-45 LAN connector (shown in Figure 5).
Item Description
A Link/Activity LED (green)
B Link Speed LED (green/yellow)
Figure 5. LAN Connector LED Locations
Table 4 describes the LED states when the board is powered up and the LAN
subsystem is operating.
Table 4. LAN Connector LED States
LED LED Color LED State Condition
Off LAN link is not established.
On LAN link is established.
Link/Activity Green
Blinking LAN activity is occurring.
Off 10 Mbits/s data rate is selected or negotiated.
Green 100 Mbits/s data rate is selected or negotiated.
Link Speed Green/Yellow
Yellow 1000 Mbits/s data rate is selected or negotiated.

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