PMB status LED

This topic provides information about the PMB status LED and corresponding action suggestions.

The following minimal configuration is required for the server to start:

One DRAM memory module in slot 1
Depending on the model, one of the following power source:
- One 300W external power adapter
- AC power source input
- DC power source input
One 2280 NVMe M.2 drive in slot 1 on the I/O module board
Three non-hot-swappable system fans

Figure 1. PMB status LED, DC power input

Figure 2. PMB status LED, AC power input

`1` LED	Description
The PMB status LED can be in one of the following states:
Off	The source power is not delivered to the system board normally: The DC power source may not be connected or working properly. The 300-watt power adapter is not working properly. To resolve the issue: Check to see if the external power cords are correctly connected to the server and to a working electrical output. Check to see if the connection of the cables between the power module board and the power input board module is stable (see Cable routing for the power module board and power input board module). Replace the power input board module or the power module board (DC PMB) or internal power supply (AC PMB)(see Power input board (PIB) module replacement or Power module board (PMB) replacement or Internal power supply unit (AC PMB) replacement).
Green	The source power is delivered to the system board normally. The server is or is ready to be powered on.

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