| PX-20S |
IEI PX-20S 20-Slots, 12 PCI Slots Expansion Backplane, 6 ISA Slots, 2 PICMG Slots w/PCI Bridge |
| PX-20S2 |
IEI PX-20S2 Backplane - 20-SLOT (3 x ISA, 17 x PCI, 1 x PICMG) PICMG 1.0 Active Backplane |
| PX-20S3 |
IEI PX-20S3 Backplane. 19 Slots | 16x PCI, 1x PICMG, 2x ISA |
| PX-20S2-R2 |
IEI PX-20S2-R2 Backplane - 21-Slot PICMG Bus Bridged Backplane, 2 PICMG, 17 PCI, 2 ISA with PCI Bridge |
| PX-20S3-R2 |
IEI PX-20S3-R2 20-Slot Backplane, 18 PCI and 2 PICMG Slots |
| PX-20S-R2 |
20-Slots,12PCI Slots Expansion Backplane, R2 |
| PX-20S2-RS-R30 |
IEI PX-20S2-RS-R30 20-Slots,17PCI Slots Expansion Backplane |
| PX-20S3-RS-R30 |
IEI PX-20S3-RS-R30 Backplane - 20-Slots,18PCI Slots Expansion Backplane |
| PX-20S3-RS |
IEI PX-20S3-RS 20 Slot Backplane with 18 PCI and 1 ISA Bus |
| PX-20S2-RS |
PICMG Bridged Backplane with 17 PCI/3 ISA Bus, AT/ATX power connector |
| PX-20S2-RS-R40 |
20-Slots,17PCI Slots Expansion Backplane |
| PX-20S3-RS-R40 |
IEI PX-20S3-RS-R40 Backplane - 20-Slots,18PCI Slots Expansion Backplane |
