IBM 390, 387, 393 DIT module, Hard disk drive status LED, NIC 1 status LED, NIC 2 status LED

Power status LED	Color	Description
On	Green	The server is on.
Off	None	The server is off.
Blinking	Green	The server is in ACPI S1 mode, which is also known
		as Power On Suspend (POS) mode. In this mode, the
		microprocessor is not working while other hardware
		devices are still working.

2

Hard disk drive status LED

The hard disk drive status LED helps you to determine the status of the hard disk drive activity.

Hard disk drive status LED	Color	Description
Off	None	The hard disk drive is not in use.
Blinking	Green	The hard disk drive is active and data is being
		transferred.

3

NIC 1 status LED

4

NIC 2 status LED

The two NIC status LEDs indicate the LAN status for the Ethernet connector 1 and Ethernet connector 2 on the rear panel of the server.

NIC status LED	Color	Description
On	Green	The server is connected to a LAN.
Off	None	The server is disconnected from a LAN.
Blinking	Green	The LAN is connected and active.

5

System status LED

The system status LED helps you to determine if there are any system errors.

System status LED	Color	Description
On	Amber	A system error has occurred.
Off	None	The server is off or the server is on and is working
		correctly.

6

Front USB connector 1

7

Front USB connector 2

Used to attach a device that requires a USB connector, such as a USB keyboard, a USB mouse, a USB scanner, or a USB printer. If you have more than six USB devices, you can purchase a USB hub, which you can use to connect additional USB devices.

DIT module

This topic provides information about the DIT module and the diagnostic LEDs on the panel of the DIT module.

18ThinkServer User Guide