Note: To change the startup sequence, start the Setup utility and select Start Options from the main menu. See “Using the Setup utility” on page 96 for details about using the Setup utility.

vThe PCI Express 2.0 bus configuration is as follows:

Expansion slot 1 is x16, slot 2 is x8 (x4 lanes), and slots 3 through 6 are x8.

Expansion slot 7 is a non-standard, 106-pin connector but accepts PCI Express x8, x4, and x1 standard adapters.

Expansion slots 1 through 4 are non-hot-plug, full-length PCI Express 2.0 and can accept adapters up to 312.00 mm (12.28 inches) long.

Expansion slots 5 through 7 are non-hot-plug, half-length PCI Express 2.0 and can accept adapters up to 167.65 mm (6.6 inches) long.

Attention: Static electricity that is released to internal server components when the server is powered on might cause the server to halt, which might result in the loss of data. To avoid this potential problem, always use an electrostatic-discharge wrist strap or other grounding system when you work inside the server with the power on.

To install a PCI Express adapter, complete the following steps.

1.Read “Safety” on page v and “Installation guidelines” on page 38.

2.Turn off the server and peripheral devices, and disconnect the power cords and all external cables.

3.Remove the server cover (see “Removing the top cover” on page 44) and determine which PCI Express expansion slot you will use for the adapter.

4.See the documentation that comes with the adapter for instructions for setting jumpers or switches and for cabling.

Note: Route adapter cables before you install the adapter.

 

Adapter

Adapter

retention

latch

Pin

Pin hole

Expansion slot cover

5.Push the adapter retention latch toward the rear of the server and open the tab.

6.Remove the expansion-slot cover.

Attention: When you install an adapter, avoid touching the components and gold-edge connectors on the adapter. Make sure that the adapter is correctly seated in the connector. Incorrectly seated adapters might cause damage to the I/O board or to the adapter.

48IBM System x3850 X5 and x3950 X5 Types 7145, 7146, 7143, and 7191: Installation and User's Guide

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IBM 71453RU manual Adapter