Figure 12. LEDs on the rear of the serverTable 9. LEDs on the rear of the serverCallout Callout1 System ID LED 2 System error LED3 Ethernet link LED 4 Ethernet activity LED5 Power input LED 6 Power output LED7 Power supply error LED1 System ID LEDThe blue system ID LED helps you to visually locate the server. A system ID LED is also located on the frontof the server. Each time you press the system ID button, the state of both the system ID LEDs changes. TheLEDs can be changed to on, blinking, or off. You can also use the Lenovo XClarity Controller or a remotemanagement program to change the state of the system ID LEDs to assist in visually locating the serveramong other servers.2 System error LEDFor the detailed information, see “Front I/O assembly” on page 19.3 Ethernet link LED4 Ethernet activity LEDEach Ethernet connector has two status LEDs.Ethernet status LED Color Status Description3 Ethernet link LED Green On Network link is established.None Off Network link is disconnected.4 Ethernet activity LED Green Blinking Network link is connected and active.None Off The server is disconnected from a LAN.5 Power input LED6 Power output LED7 Power supply error LEDEach hot-swap power supply has three status LEDs.Chapter 2. Server components 25