PXIe Generation Compatibility

Updated Jan 8, 2021

Reported In


  • PXI Chassis
  • PXI Remote Control Module

Issue Details

  • Can I use PXIe Generation 2 cards in a PXIe Generation 3 slot or vice versa? 
  • Can I replace a Gen 2 PXIe module with a Gen 3 PXIe module?


There are no physical slot differences between different generations of PXIe cards. You can expect backward compatibility through various PXI/PXIe generations and can replace older modules with the newer version of that same module. However, the different generations will have differences in maximum data transfer rate:
 Gen 1Gen 2Gen 3
x1250 MB/s500 MB/s1 GB/s
x41 GB/s2 GB/s4 GB/s
x82 GB/s4 GB/s8 GB/s
x164 GB/s8 GB/s16 GB/s