Always attach an external device while your system and the device are turned off. Next, turn on any external devices before turning on the system (unless the documentation for the device specifies otherwise).

See "Using the System Setup Program" on page 27 for information about enabling, disabling, and configuring I/O ports and connectors.

NIC Indicator Codes

The NIC on the back panel has an indicator that provides information on network activity and link status. See Figure 1-3. Table 1-3 lists the NIC indicator codes.

Figure 1-3. NIC Indicators

1

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 link indicator

2

activity indicator

Table 1-3. NIC Indicator Codes

 

 

 

 

Indicator Type

Indicator Code

Description

 

 

 

Activity

Off

When off at the same time that the link indicator is off,

 

 

the NIC is not connected to the network or the NIC is

 

 

disabled in the System Setup program. See "Using the

 

 

System Setup Program" on page 27.

 

Blinking

Indicates that network data is being sent or received.

 

 

 

Link

Off

When off at the same time that the activity indicator is

 

 

off, the NIC is not connected to the network or the NIC is

 

 

disabled in the System Setup program. See "Using the

 

 

System Setup Program" on page 27.

 

Yellow

1000-Mbps connection

 

Orange

100-Mbps connection

 

Green

10-Mbps connection

 

 

 

14

About Your System

Page 14
Image 14
Dell SC440 owner manual NIC Indicator Codes, System Setup Program on, Yellow Mbps connection Orange Green About Your System