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Defective products will be accepted for exchange, at our discretion, within 14 days from receipt. Buyer might be requested to return the defective products to SOPTO for verification or authorized service location, as SOPTO designated, shipping costs prepaid. .....


PCIE Server NIC card Application

  • PCI-E NIC Cards provide redundant connectivity to ensure an uninterrupted network connection.

  • PCI-E NIC Cards are ideal for VM environments with multiple operating systems, requiring shared or dedicated NICs.

  • They are specially designed for desktop PC clients, servers, and workstations with few PCI Express slots available.


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PCI Express Pinout


The pinout for expansion slots found on Personal Computers is listed below. Two types of PCIe connectors are common on PCs; the 1x connector which is used for a normal board expansion slot and the 16x connector which is used as a video card expansion slot. The 4x and 8x style connectors have not yet been seen residing on any mother-board.


  • PCI-Express 1x Connector Pinout and 1x signal names
  • PCI-Express 4x Connector Pinout and 4x signal names
  • PCI-Express 8x Connector Pinout and 8x signal names
  • PCI-Express 16x Connector Pinout and 16x signal names


The signaling width [data path width] also uses the term "by"; 1x is called 'by one', 16x is called 'by sixteen' ~ you may also see 16x as x16, means the same thing.

Gigabit PF Dual Port Server Adapter

Gigabit PF Dual Port Server Adapter


Connectors for the 1x PCIe slot and the 16x PCIe slot are different sizes because they support a different number of bit lanes. The connector sizes for 4x and 8x PCI Express are also different, for the same reason. The PCIe 1x connector has 36 signal pins, the 4x connector has 64 signal pins, the 8x connector has 98 signal pins, and the 16x connector has 164 signal pins. A PCI express card is upward compatible, so a 1x card will fit in any card slot, a 4x card will fit into an 8 or 16x port and so on. An adaptor card using 16x lanes will only fit in a x16 size connector. 

Sopto supply professional PCI-E Server Adapters. To purchase high quality PCIe Cards with low cost or for more products’ information, please contact a Sopto representative by calling 86-755-36946668, or by sending an email to