Siemens SIMATIC PC BI45 Technical Description page 17

When the cover of the unit is removed, you see the following
components/function units:
RAM memory module
Fan
Processor
Power supply
Figure 1-6 Function Units when the BI45 is Opened
SIMATIC PC BI45/FI45 PII, Technical Description
C79000-G7076-C794-03
– Power supply
– Floppy disk drive and CD-ROM drive
– Motherboard
– Bus board
– Fan
– Processor
– RAM memory module(s)
Floppy disk drive and CD-ROM drive
System Unit
Motherboard
Bus
board
1-11