D-Link 1016R User Guide - Page 12

10/100 Fast Ethernet Switch User's Guide power outlet. Supported input voltages range from 100 ~ 240 VAC at 50 ~ 60 Hz. LED Indicators The LED indicators of the Switch include Power, 100M, Link/Act (Link/Activity). The LED indicators are used to facilitate monitoring and troubleshooting of the Switch. The following shows the LED indicators for the Switch along with an explanation of each indicator. Figure 3.3 The DES-1024R Switch LED indicators ♦ Power This indicator operates when the Switch is turned on. If this indicator is not lit, check the AC power connector to ensure proper insertion of the power cord and that the power switch is turned ON. ♦ 100M The LED indicator lights green when a 100 Mbps device is connected to a respective port or the up-Link port. If a 10 Mbps device is connected to a respective port or the up-Link port, the LED indicator is OFF. ♦ Link/Act These LED indicators are lighted green when there is a secure connection (or link) to a device at any of the ports. The LED indicators blink green whenever there is reception or transmission (i.e. Activity-Act) of data occurring at a port. 6