Install Guide

NOTE: The S4200-ON Series switch powers up when you connect the cables between the power supply and the power

source.

AC or DC power supply replacement

CAUTION: Disconnect the power cord before removing the power supplies. Also, disconnect all power cords

before servicing.

NOTE: The PSU slides into the slot smoothly. Do not force a PSU into a slot as this action may damage the PSU or the

S4200-ON Series switch.

NOTE: If a PSU fails, you must replace the entire unit. There are no field serviceable components in the PSU. To request a

hardware replacement, see Dell EMC support.

NOTE: If you use a single PSU, install a blank plate in the other PSU slot. If you are only using one power supply, install the

power supply in the first slot, PSU1. Install a blank plate in the second slot, PSU2.

1. Disconnect the power cable from the PSU.

2. Use the grab handle to slide the PSU out of the power supply bay.

3. Use the grab handle on the replacement PSU to slide it into the power supply bay.

4. Attach the power cord to the replacement PSU.

NOTE: The switch powers up when the cables are connected between the power supply and the power source.

Connect DC power supply to power source

Each DC powered switch comes with a set containing a prewired, 3-inch 8 AWG, power supply connector and a four-screw

wiring block. One set is provided for each DC PSU.

Figure 18. DC power connector and wiring block

DC wire RTN 2. DC power connector

3. Captive screws (2) 4. Orange tab

5. PSU status LED 6. DC power socket

7. DC wire –48V

1. Strip 0.5 inches of insulation from each of the power connector’s wires, RTN and –48V.

Power supplies