Expansion card slot identification
This section identifies and describes computer expansion card slots, and presents card configuration
Slot identification and description
The following figure identifies computer expansion card slots.
The following table describes the computer PCIe card slots.
The x1, x4, and x16 designators describe the mechanical length of the slot. The number in
parentheses lists the number of electrical PCIe lanes routed to the expansion slot. For example, x16(4)
means that the expansion slot is mechanically a x16 length connector, with four PCIe lanes connected.
Card configuration restrictions for power supplies
CPU, and memory) must not exceed the maximum rating of the computer power supply. For power
supply information, see
110 Chapter 5 Replacing components
Identifying expansion card slots
PCIe2 - x16
PCIe - x16(4)
PCIe1 - x1
To prevent damage, the overall power consumption of the computer (including I/O cards,
Power supply specificationson page
Slot power (maximum)
45W for all graphics cards
80W for all I/O devices