HP Xw4550 HP xw4550 Workstation - Service and Technical Reference Guide - Page 90

PCI Express,

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3. Secure the bracket with two screws (3). Figure 4-34 Installing the PCI retainer PCI Express PCI Express improves system attributes. PCI Express enables a low-power, scalable, high-bandwidth communication path with a small number of connections (wires) compared to traditional parallel interfaces (for example, PCI). The PCI Express I/O slots can support other PCI Express cards with lesser bus bandwidth than what is physically defined for the slot. Use the following table to determine compatibility. Table 4-6 PCI Express compatibility matrix for the HP xw4550 Workstation Mechanical compatibility Electrical compatibility PCI Express x16 slot x1, x4, x8 and x16 cards x1 , x4, x8, and x16 modes PCI Express x4(1)slot x1 and x4 cards x1 mode To remove a PCI Express card: 1. Disconnect power from the system (Predisassembly procedures on page 55), remove the side access panel (Side access panel on page 59), and remove the PCI retainer (PCI retainer on page 81), if installed. 2. Lift the PCI levers (1) by first pressing down and then up. 3. If removing a PCI Express x16 graphics card, press in on the release lever (2) while lifting the card (3) out of the chassis. Store the card in an anti-static bag. If removing another type of PCI Express card, lift the card out of the chassis. You do not need to press in on the release lever. 82 Chapter 4 Removal and replacement procedures ENWW

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3.
Secure the bracket with two screws (3).
Figure 4-34
Installing the PCI retainer
PCI Express
PCI Express improves system attributes. PCI Express enables a low-power, scalable, high-bandwidth
communication path with a small number of connections (wires) compared to traditional parallel
interfaces (for example, PCI). The PCI Express I/O slots can support other PCI Express cards with lesser
bus bandwidth than what is physically defined for the slot. Use the following table to determine
compatibility.
Table 4-6
PCI Express compatibility matrix for the HP xw4550 Workstation
Mechanical compatibility
Electrical compatibility
PCI Express x16 slot
x1, x4, x8 and x16 cards
x1 , x4, x8, and x16 modes
PCI Express x4(1)slot
x1 and x4 cards
x1 mode
To remove a PCI Express card:
1.
Disconnect power from the system (
Predisassembly procedures
on page
55
), remove the side
access panel (
Side access panel
on page
59
), and remove the PCI retainer (
PCI retainer
on page
81
), if installed.
2.
Lift the PCI levers (1) by first pressing down and then up.
3.
If removing a PCI Express x16 graphics card, press in on the release lever (2) while lifting the card
(3) out of the chassis. Store the card in an anti-static bag.
If removing another type of PCI Express card, lift the card out of the chassis. You do not need to
press in on the release lever.
82
Chapter 4
Removal and replacement procedures
ENWW