3Com 4500G Getting Started Guide - Page 14

14 CHAPTER 1: INTRODUCING THE SWITCH 4500G FAMILY Table 3 Description on the LEDs of the Switch 4500G 24-Port/Switch 4500G 48-Port Ethernet Switch (Continued) LED Module LED Label Status Module Green, ON (MOD) Yellow, blinking 7-segment digitron display OFF Unit POST Green, running blinking Description The module is installed and operates normally. The module is not supported or is in trouble. The module is not installed. The POST ID of the in-process test is displayed. POST failed Red, blinking The POST ID of the failed test blinks. Loading Green, software blinking A light bar rotates clockwise around the display during the loading procedure. Fan failure Red, ON An "F" is displayed. Overtemp Red, ON erature alarm A "t" is displayed. Cluster status Green, ON A "C" is displayed if this is a command switch. An "S" is displayed if this is a member switch. A "c" is displayed if this is a candidate switch. A "1" is displayed when the switch operates independently.