Table 4: Rear Components in a Fully Configured AC-Powered MX2020 Router
Number of FRUsSlotsComponent DescriptionComponent No.
2Fan tray 2 and fan tray 3
(behind cage door)
Upper fan trays (two)1
1PDM3/Input1AC PDM—Three-phase delta
or wye
2
99 through 17AC PSM3
1–PSM air filter4
1PDM2/Input0AC PDM—Three-phase delta
or wye
5
1PDM1/Input1AC PDM—Three-phase delta
or wye
6
90 through 8AC PSM7
1–PSM air filter8
1PDM0/Input0AC PDM)—Three-phase delta
or wye
9
1–Fan tray air filter10
2Fan tray 0 and fan tray 1
(behind access door)
Lower fan trays (two)11
9
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