3Com 4800G Getting Started Guide - Page 16

16 CHAPTER 1: PRODUCT OVERVIEW Table 5 Descriptions of the LEDs on the front panel of Switch 4800G PWR 24-Port LED Mark Status 10/100/1000Base-T Ethernet port status LED Speed Duplex PoE Green Yellow Flashing yellow (3 Hz) OFF Green Yellow Flashing yellow (3 Hz) OFF Solid green Flashing green (1 Hz) Solid yellow SFP port status LED (1000 Mbps) SFP port status LED (100 Mbps) Flashing yellow (3 Hz) OFF The Mode button has no Green effect on the LED. Speed Flashing yellow (3 Hz) OFF Yellow Duplex Flashing yellow (3 Hz) OFF Green Flashing yellow (3 Hz) OFF Description A 1000 Mbps link is present. When data is being received or sent, the LED flashes at a high frequency. A 10/100 Mbps link is present. When data is being received or sent, the LED flashes at a high frequency. The port fails the POST. No link is present. The port works in the full duplex mode. The LED flashes at a high frequency when data is being received or sent. The port works in the half duplex mode. The LED flashes at a high frequency when data is being received or sent The port fails the POST. No link is present. The port supplies power normally. The required power of the attached device exceeds the maximum power that the port can supply. The total power reaches the maximum power, so the port stops supplying power. The device attached to the port is not a powered device (PD), so the port cannot supply power. A PoE failure occurs, so the port cannot supply power. The port fails the POST. The port does not supply power. A 1000 Mbps link is present. When data is being received or sent, the LED flashes at a high frequency. The port fails the POST. No link is present. A 100 Mbps link is present. When data is being received or sent, the LED flashes at a high frequency. The port failed the POST. No link is present. The port operates in the full duplex mode. When data is being received or sent, the LED flashes at a high frequency. The port fails the POST. No link is present.