Connecting the cables

The following illustrations show the locations of the input and output connectors on the front and rear of the server.

Front view

1 Video connector

2 USB 1 connector

3 USB 2 connector

Rear view

1

Ethernet 3 (optional)

7

USB 3

2

Ethernet 4 (optional)

8

Serial

3

Power supply 1

9

Video

4

Power supply 2

10

Ethernet 2

5

Power cord connectors

11

Ethernet 1

6

USB 4

12

Systems-management (Ethernet)

You must turn off the server before you connect or disconnect cables from the server. Exception: in order to view the error LEDs inside the server, you must leave the power cables connected to the power supplies.

See the documentation that comes with any external devices for additional cabling instructions. It might be easier for you to route cables before you connect the devices to the server.

Cable identifiers are printed on the cables that come with the server and optional devices. Use these identifiers to connect the cables to the correct connectors.

If the server comes with an installed operating system, see the documentation that comes with the operating system for additional cabling instructions.

Updating the server configuration

When you start the server for the first time after you add or remove an internal device, external SAS device, or USB keyboard or mouse, you might receive a message that the configuration has changed. The Server Configuration and Boot

Chapter 5. Installing optional devices and replacing customer replaceable units 101

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Lenovo 3797 manual Connecting the cables, Updating the server configuration, Front view, Rear view