11. The difference between these models was less than 10 wires on the backplane . 12. One internal disk drive and several backplane slots were sacrificed in this conversion. 13. The card connects to the backplane through a 160-pin edge connector. 14. The backplane assembly is made of graphite composite, invar, and titanium. 15. However, backplane architecture is somewhat unrelated to the SBC technology plugged into it. 16. Trapezoidal Transceivers have a controlled risetime and make backplane and bus design much simpler. 17. The 1303 was a total redesign of the 1301 system with a new backplane . 18. Expansion peripherals of the computer system are connected to other slots of the backplane . 19. The Backplane was designed to comply with the US FAR 103 Ultralight Vehicles rules. 20. The PICMG 2.16 CompactPCI Packet Switching Backplane specification was adopted in Sept 2001.