National Instruments NI 447 Series User Manual page 6

NI PCI/PXI-4472
NI PXI-4472
PCI
PXI
NI PCI/PXI-4472 refers to the NI PCI-4472, NI PXI-4472,
and NI PXI-4472B unless otherwise noted.
NI PXI-4472 refers to the NI PXI-4472 and NI PXI-4472B unless
otherwise noted.
A high-performance expansion bus architecture originally developed by
Intel to replace ISA and EISA, it is now accepted as a standard for PCs
and workstations, and offers a theoretical maximum transfer rate of
132 Mbytes/s.
PXI stands for PCI eXtensions for Instrumentation. PXI is an open
specification that builds off the CompactPCI specification by adding
instrumentation-specific features.