Dell XPS 730 H2C (Late 2008) - Manual (Page 7)

Gently pull the securing tab (if present) and place the card in the connector. Press down firmly and ensure that the card is fully seated in the slot.
8. Screw in the card retention screw(s) on the top of the card retainer at the appropriate card slot.
9. Repeat for additional graphics cards.
Connect the PCIe supplementary power connectors from the system power supply to each of the graphics cards. See the documentation for the card for
information about the card's cable connections.
10. Install the NVIDIA SLI connector across the two outer graphics cards. Each SLI-ready graphics card has an SLI connector tab on its upper side. Press
firmly on each connector so that it completely covers the connector tab.
11. If present, lower the graphics card bridge that lays over the installed cards and snap it into place.
12. Replace the computer cover (see Replacing the Computer Cover ), reconnect the computer and devices to electrical outlets, and then turn them on.
Replacing the PCI and PCI Express Cards
1. Follow the procedures in Before You Begin .
2. Remove the computer cover (see Replacing the Computer Cover ).
3. Disconnect any cables connected to the card.
4. If the card is a full length, remove the captive screws on top of the PCI card fan shroud and remove the shroud.
5. Remove the card retention screw.
CAUTION: Do not route card cables over or behind the cards. Cables routed over the cards can prevent the computer cover from closing properly
or cause damage to the equipment.
CAUTION: An incorrectly attached graphics power cable may result in degraded graphics performance.
1 graphics card bridge 2 power connectors (2)
3 dual-PCIe graphics cards
CAUTION: To avoid electrostatic discharge and damage to internal components, ground yourself by using a wrist grounding strap or by
periodically touching an unpainted metal surface on the computer chassis.
CAUTION: If your computer came with a PCI graphics card installed, removal of the card is not necessary when installing additional graphics
cards; however, the card is required for troubleshooting purposes. If you remove the card, store it in a safe and secure location.