Intel BLKDH57JG manual LAN Subsystem, USB 2.0 Support, LAN Connector LEDs . LAN Connector LEDs

Desktop Board Features

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.

Figure 2. LAN Connector LEDs

Table 6. LAN Connector LEDs

LED	LED Color	LED State	Indicates
A (Link/Activity)	Green	Off	LAN link is not established
		On	LAN link is established
		Blinking	LAN activity is occurring
B (Link Speed)	N/A	Off	10 Mb/s data rate
	Green	On	100 Mb/s data rate
	Yellow	On	1000 Mb/s data rate

USB 2.0 Support

The board supports up to twelve 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

•Six front panel ports via three dual-port internal headers

USB 2.0 support requires both an operating system and drivers that fully support USB 2.0 transfer rates.

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