HP Z220 CMT Series, Maintenance And Service Manual, Page: 102 / 198

HP Z620 Workstation slot identification and description
Maximum power used by all slots must not exceed total system power and is subject to configuration
limitations.
Figure 3-4 Identifying expansion card slots
NOTE: Slot 1 is not available in dual processor configurations.
Table 3-7 PCI slots
Slot Type Mechanical compatibility Electrical compatibility
1 PCIe2 x4 (1) x4 x1
2 PCIe3 - x16 x16 x16
3 PCIe2 - x8 (4) x8 x4
4 PCIe3 x8 x8 x8
5 PCIe3 x16 x16 x16
6 PCI 32/33 PCI PCI
NOTE: The PCIe designators indicate the mechanical connector size and number of electrical PCIe
lanes routed to an expansion slot. For example, x16 (8) means that the expansion slot is mechanically
a x16 length connector, with 8 PCIe lanes supported.
NOTE: Slots two, four, and five are PCIe GEN3 slots. Slot two is the primary graphics slot; slot five is
the secondary graphics slot.
Slots three and four use open-ended PCIe connectors, so a PCIe x16 card can be inserted. This allows
the workstation to support more PCIe x16 expansion cards. A x16 card typically trains and runs at the
maximum lane width available by the expansion slot. The card runs at the reduced lane width, with a
corresponding performance decrease. Graphics cards greater than 75 watts require the use of an
auxiliary power cable adapter.
90 Chapter 3 Component Replacement Information and Guidelines