These variations are called 'Lanes', and are usually referred to by a number followed by an x (1x 8x 16x, etc.) The picture shows a 16x PCI slot. These can be difficult to identify, as the length of the slot can vary. Most computers made after 2005 (including Macintosh) come with PCI-E slots. The small segment is first, instead of in the center. These slots can be differentiated from the 64 bit PCI by the organization of the segments. Apple can look up a G5 serial number to determine if PCI-X slots are available, or if the new PCI-E card must be used, instead. Macintosh G5 used PCI-X until the change to the liquid-cooled hardware versions. Virtually all PC motherboards have at least the 32 bit PCI slot. Additionally, 32 bit PCI cards will function properly in a PCI-X slot, but PCI-X cards do not work in a standard 32 bit PCI slot. The difference between the normal 32 bit PCI slot and PCI X is the medium-length slot on the left side. LaCie makes several expansion cards that use this connector. This slot can be identified by its three segments, with the shortest segment found in the center. It was not common on PCs, but all G4 and G3 Macintosh computers used them. LaCie no longer manufactures any products compatible with this slot. Placing a PCI card in the wrong slot will damage the card, and can potentially destroy the entire computer. Presently, there are three main PCI motherboard connectors (usually referred to as 'slots'.)Įach PCI slot type looks different, and accepts different devices.

This type of connector originated in the early 1990s, and is still in use today. Peripheral Component Interconnect, or PCI, is the most common way to attach add-on controller cards and other devices to a computer motherboard.

What can you use pcie slots for