Define Pci Slots
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Originally known as 3rd Generation I/O (3GIO), PCI Express, or PCIe, was approved in July 2002 as a serial computer expansion bus standard. PCI Express was designed as a high-speed replacement for the aging PCI and AGP standards and is available in different formats. The data transmitted over PCI Express is sent over wires (called lanes) in full duplex mode (both directions at the same time). Each lane is capable of transfer speeds around 250 MB/s and each slot can be scaled from 1 to 32 lanes. With 16 lanes, PCI Express supports a bandwidth of up to 4,000 MB/s. The following images show what the PCI Express slots look like on a motherboard.
The increase in power from the slot breaks backward compatibility between PCI Express 2.1 cards and some older motherboards with 1.0/1.0a, but most motherboards with PCI Express 1.1 connectors are provided with a BIOS update by their manufacturers through utilities to support backward compatibility of cards with PCIe 2.1. The usecase is that user puts in high performing PCIe card to low performing PCIe slot. Let us say card is capable of supporting PCIE3.0 with 16 bit, but the end user inserts this in to the slots of lower standard (PCIE2.0) or to lower bus width (8 bit).
Dell Computers With Pci Slots
Related pages
Laptop Pci Slot
- The official PCI Express website.
Different Types Of Pci Slots
Computer acronyms, Expansion slot, Hardware terms, M.2, Motherboard terms, NVMe, PCI