Card Retainer Captive Screw - HP 748 Owner's Manual

NOTICES:
Figure 5-2
This PCI tray only supports option cards with +5 Vdc bus signalling.
If your workstation application requires several accessory cards and mass
storage devices, power budgeting may be required. This ensures the power
needed for these internal devices does not exceed the power available in
the system.
The PCI tray provides power for option cards from both a +3.3 Vdc source
and a +5 Vdc source. Cards may use either or both power sources, up to
25W per slot. However, the +3.3 V dc source is limited to 39.8 W
combined for slots 1 and 2, and 39.8 W combined for slots 3 and 4. For
example, if the card in slot 1 draws 25 W at +3.3 V dc, only 14.8 W at
+3.3 V dc is available to a card in slot 2. The limits of + 5 Vdc is 25 W per
slot.
If you upgrade your system, adding more: RAM cards, mass storage
devices, or VME, or PCI accessory cards, you must recompute the power
budget to ensure the new configuration will be within the system's
capability.
Refer to Chapter 2 for power budgeting.
Cards for slots 1 and 2 are installed component side down; cards for slots
3 and 4 are installed component side up.
Loosen the card retainer captive screw (see Figure 5-2) for the appropriate
slot, and then remove the card retainer, as shown in Figure 5-3.

Card Retainer Captive Screw

Card Retainer Captive Screw
PCI Card Installation
Hardware Installation
5-5