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CHAPTER 5 M400R Main Cabinet
Fans The Table 5.1 lists the fans installed in the M400R main cabinet.
Table 5.1 Fans
Name Tray # Location
Fan #0 Tray #04 Right (front view) of the cabinet
Fan #1
Fan #3 Tray #01 Center (front view) of the cabinet
Fan #4 Tray #02 Left (front view) of the cabinet
Fan #5
Fan #10 Tray #05 Bottom (rear view) of the cabinet
Fan #11
Fan #12 Tray #06 Upper (rear view) of the cabinet
Fan #13
Fan #14 Tray #07 Above the processer module
Fan #15
Fan #16 Tray #08 Side the PCI slot
Fan #17
Fan #18 Tray #09 Above the processer module (System expansion unit)
Fan #19
Fan #20 Tray #10 Side the PCI slot (System expansion unit)
Fan #21
Power supplies
The M400R main cabinet has 2 kinds of power supply units as well as DDC (DC-DC Converter),
FEP (Front End Bulk Power) unit has AC input, and provide +48V(to BE). BE (Back End Power)
has +48V input, and provide +12V or +5V or +3.3V to some internal components. The power
supplies must be configured according to the system hardware configuration as described in
Table 5.2 .
Table 5.2 Power Supply Units
Without an Expansion With an Expansion
System Board System Board
Standard Redundant Standard Redundant
FEP
BE(5V)
BE(3.5V)
2 3 3 4
3 4 5 6
2 3 3 4
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