扩展和远程基板同主机架连接在一起，所以基板大致可分为三种不同类型的: CPU基板，扩展基板和远程基板，这些基板按照可见尺寸分为5槽和10槽的，命名原则即是基板上可安装的模板数量。每一一个机架，无论是CPU基板，扩展机架基板或是远程机架基板，也无论是5槽还是10槽大小的基板，都必须要有自己的供电电源模块。供电电源模块总是安装在机架基板的左端的槽中，各种不同型号的电源模板可适应于各种不同的需求。
FAIRCHILD TD C17800-406 PNEUMATIC TRANSDUCER, NNB
SQUARE D FAF36100V313 CIRCUIT BREAKER, NNB
BALDOR M3206 1 1/2HP 230/450V 4.3/2.4AMPS 1723RPM 3PH
THK HRW35CA/CR LINEAR BEARING, NIB
ALLEN BRADLEY 836T-D462J SERIES A PRESSURE DIFFERENCE C
AGE INDUSTRIES 1104691100 100FT PVC TUBING, NIB
ALPHA PLANETARY GEAR REDUCER SP100 10-1
OKUMA E4809-770-032-2 RELAY BOARD
AEG MODICON GOULD MODEL PLS4 POWER SUPPLY 110-144
FUSION UV SYSTEMS RF DETECTOR RF-1 079961
COMPUTER DYNAMICS LINES UNLIMITED OPERATOR INTERFACE CO
IKO LWH25 APPROX 19″ LINEAR RAIL WITH 2 LWHS25 BEARING
GENERAL ELECTRIC AC361WG 30 AMP PHASE 3 BUS PLUG, NNB
SQUARE D 52046 275 50 POWER SUPPLY,
SQUARE D 52046 275 50 POWER SUPPLY, NIB
LAMBDA ELECTRONICS 19.0-29.4VDC OUTPUT REGULATED POWER
STI MC4244RE MICRO SAFE SERIES LIGHT CURTAIN RECEIVER,
ACOPIAN 24V 20A REGULATED DC POWER SUPPLY W515GT54
