D-Link DGS-108 Product Manual - Page 10
Front-Panel Components - 8 port gigabit switch
UPC - 790069285998
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D-Link DGS-108 Unmanaged Gigabit Ethernet Switch Front-Panel Components The front panel of the Switch consists of LED indicators, eight (10/100/1000 Mbps) Ethernet ports. Figure 1-1. Front Panel View of the Switch Comprehensive LED indicators display the status of the Switch and the network. LED Indicators The LED indicators of the Switch include Power, 100/1000Mbps, and Link/Act. The following shows the LED indicators for the Switch along with an explanation of each indicator. Figure 1-2. LED Indicators LED Indicators Comprehensive LED indicators display the conditions of the Switch and status of the network. A description of these LED indicators follows (see LED Indicators). The LED indicators of the Switch include Power, Link/Act, 1000Mbps, and 100Mbps. The Cable Diagnostic functions of the Switch are indicated by a combination of the Speed and the Link/Act LEDs, as described below. Power Indicator This green indicator illuminates when the Switch is receiving power. Link/Act This green indicator illuminates steadily when a port is connected to a station successfully and has a good link. The indicator will blink to indicate that a port is transmitting or receiving data on the network. Speed − 1000Mbps/Green; 100Mbps/Amber; 10Mbps/Off This indicator is amber-colored when the port is connected to a 100Mbps Fast Ethernet station. It is green when the port is connected to a 1000Mbps Ethernet station. It is not illuminated when the port is connected to a 10Mbps Ethernet station. Cable Diagnostic − LED Indications When the Switch is booted up (when the Switch is first powered on), the Cable Diagnostic function is initialized and run. The Cable Diagnostic function will detect three common faults in an Ethernet cable connecting the Switch to a remote network device: an open circuit (a lack of continuity between the pins at each end of the Ethernet cable or a disconnected cable), a short circuit (two or more conductors short-circuited), and improper termination (a termination resistance greater than the specified 100 ohms). Any of these common cable faults will be detected by the Cable Diagnostic function and the LEDs will display the results of the Cable Diagnostic function as follows: Open, Short, or Improper Termination − Speed LED: Amber − Link/Act LED: Off Cable connection good − Speed LED: Green − Link/Act LED: Off 3