Lantronix
SM12XPA Install Guide
33847 Rev. B
23
Connecting the AC Power Cord
1: Connect the AC power cord to the AC power receptacle of switch.
2: Connect the other end of the AC power cord to the AC power outlet.
3: Check the SYS LED. If it is ON, the power connection is correct.
Connecting AC Power Cord
Adding a Second (Optional) Power Supply
The SM12XPA ships with one 250W power supply installed. Use the procedure below to install a second power
supply.
Procedure:
1. Use a small Phillips head screwdriver to remove the two faceplate mounting screws. Keep the screws and
faceplate for possible future use.
2. Check for proper power supply orientation (label up/connectors down) and carefully slide the second PS into
the open PS slot.
Warning
: Insert the power supply with the label up (edge connectors down). Otherwise, the
power supply can be easily damaged.
3. Push the second power supply fully into the slot until it “clicks” into place.
4. Power up the two power supply modules.