A data server having a plurality of hot replaceable processing unit modules. Each module includes a motherboard having plugged therein: a CPU; a main memory; an I/O adapter card, and an interconnect printed board, electrically connected to the motherboard. A backplane has a first connector adapted for...http://www.google.de/patents/US6157534?utm_source=gb-gplus-sharePatent US6157534 - Backplane having strip transmission line ethernet bus
