Cisco Systems AS5400XM quick start Last. Statement, Power switch To DC source

Step 2 Note the orientation of the DC power supply. The power supply cord should have three wires: 48 VDC Return, –48 VDC, and a safety ground (green wire). (See Figure 38, Figure 39, and Figure 40.)

Warning	The illustration shows the DC power supply terminal block. Wire the DC power supply using the appropriate lugs
	at the wiring end, or with no lugs, as illustrated. The proper wiring sequence is ground to ground, positive to
	positive, and negative to negative. Note that the ground wire should always be connected first and disconnected
	last. Statement 197
Figure 38 Cisco AS5350XM Universal Gateway DC Power Supply Connections—Single Power Supply
	Power switch	To DC source

DC connector

	56022
Source A - NEG	Ground
Source A - RTN	Source B - RTN

Source B - NEG

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