Integrated complete industrial cases with backplane and power supply units for CompactPCI systems to be installed in 19” free-standing and desk-top cabinets. CompactPCI PSB (Package Switched Backplane) version is intended for telecommunications applications; the dimensions of available chassis are 4 / 10 U and the number of slots is 8 / 16. System based on 64 bit CompactPCI backplane with rear I/O boards. The system includes two 19” PSU 250 W 3 U 8 HP power supply units and it can be upgraded with two more.