Lan Subsystem; Usb 2.0 Support; Lan Connector Leds - Intel DH57DD Product Manual

LAN Subsystem

The LAN subsystem includes:
• Intel 82578DC Gigabit (10/100/1000 Mb/s) Ethernet LAN controller
• RJ-45 LAN connector with integrated status LEDs
LAN software and drivers are available at http://downloadcenter.intel.com/.
Two LEDs are built into the RJ-45 LAN connector located on the back panel (see
Figure 2). These LEDs indicate the status of the LAN as shown in Table 6.
Table 6. LAN Connector LEDs
LED
A (Link/Activity)
B (Link Speed)

USB 2.0 Support

The board supports up to fourteen USB 2.0 ports provided by two EHCI host
controllers in the Intel H57 PCH that allow the use of EHCI-compatible drivers.
The port arrangement is as follows:
• Six ports via stacked back panel connectors
• Eight front panel ports via four dual-port onboard headers
USB 2.0 support requires both an operating system and drivers that fully support
USB 2.0 transfer rates.
Figure 2. LAN Connector LEDs
LED Color LED State
Green Off
On
Blinking
N/A Off
Green On
Yellow On
Desktop Board Features
Indicates
LAN link is not established
LAN link is established
LAN activity is occurring
10 Mb/s data rate
100 Mb/s data rate
1000 Mb/s data rate
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