VPX backplanes have the following parameters:
- panel height: 3 U
- number of slots: 5 (without rear I/O boards, full mesh topology), 7 (with rear I/O boards, full mesh topology), 7 (without rear I/O boards, star topology), 7 (with rear I/O boards, star topology)
- socket configuration changes via DIP Switch
- in accordance with: