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What are the specifications of PCIe cards?

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Author : PURPLELEC
Update time : 2023-08-22 11:23:42
  A PCIe card is a network card with a PCIe interface, which is used as an expansion port in a motherboard-level connection. Specifically, PCIe-based expansion cards plug into PCIe slots on the motherboards of hosts, servers, and network switches.
  Classification based on PCIe card specifications
  The specification of a PCIe card is usually indicated by the number of lanes. Generally speaking, PCIe cards come in five physical sizes: x1, x4, x8, x16, and x32. (PCIe x32 is very rare and not a mainstream specification.) The number after "x" refers to the number of lanes in the PCIe slot. For example, a PCIe x4 card means that the card has four lanes.
  In practical applications, the PCIe card needs to be inserted into the PCIe slot of the host or server, and the specification and configuration of the slot are the same as that of the card. However, in the face of situations like slot shortage, PCIe cards can also be installed into a wider slot. For example, a PCIe x8 card can be placed in a PCIe x16 slot when the PCIe x8 slot is already occupied, but the card will always run in PCIe x8 mode. See the table below for the PCIe card specifications.

PCI-E 1X to 16X External Card

* Plug and Play
* PCI-E Splitter 1 to 4 PCI Riser Card for PCIe 1 to 4 PCI-Express 16X Slots Riser Card,
* Supported system Windows10/8/7 (32/64 bit)/ XP; Linux

pcie card