2. Attach the PCI retainer. For short PCI cards, attach the hooks of the support arm 1 under the slots
on the rear of the chassis, and rotate the card support down. The arm will flex on the card and you
lift the front part of the arm 2 onto the chassis.
●
For short PCI cards, attach the lip of the PCI retainer over the chassis slot 1 and pull the lower
part of the arm over the PCI retention clamp 2.
●
For tall PCI cards, attach the lip of the PCI retainer under the chassis slot 1 and pull the lower
part of the arm over the PCI retention clamp 2.
Figure 4-23 Installing PCI retainer on short card
Figure 4-24 Installing the PCI retainer on tall card
PCI Express
PCI Express is a point-to-point architecture and uses a serial data transmission protocol. A single PCI
Express lane consists of four wires and can transmit 250 MB in a single direction or 500 MB in both
directions simultaneously. This bandwidth is not affected by what is happening on other PCI Express
buses or legacy PCI/PCI-X buses (provided that total bandwidth can be handled by the CPU and the
memory subsystem). The transmission protocol is somewhat similar to that used for a LAN connection
and contains error correction and detection, packet addressing, and other network features.
76 Chapter 4 Removal and replacement procedures ENWW
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