TP-Link TL-SG3428X-UPS Installation Manual page 16

JetStream L2/L2+ Managed Switch
Note:
1. You can connect an external 12 V DC lead-acid battery as a redundant power supply for the
switch. The minimum required capacity is 4.5 AH.
2. Battery is automatically used to supply power when the AC power is turned off. When the AC
power is working, it will automatically charge the battery.
The rear panel of other models is shown as the following figure. The figure is for demonstration
purposes only. Your switch may differ in appearance from the depicted.
Kensington Security Slot
Kensington Security Slot
Secure the lock (not provided) into the security slot to prevent the device from being stolen.
Grounding Terminal
The switch already comes with lightning protection mechanism. You can also ground the switch through
the PE (Protecting Earth) cable of AC cord or with Ground Cable. For detailed lightning protection
measures, go to https://www.tp-link.com/support, search the model number of your switch and go to
the product Support web page, refer to the Lightning Protection Guide from the Related Documents:
https://www.tp-link.com/us/configuration-guides/lightning_protection_guide/.
Power Socket
Connect the female connector of the power cord here, and the male connector to the AC power outlet.
Make sure that the voltage of the power supply meets the requirement of the input voltage (100–240 V~
50/60 Hz).
Caution:
Please use the provided power cord.
12 Introduction
Grounding Terminal Power Socket