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2.4.2 Bottom View
The battery compartment provides the following connectors. 
2.4.3 Back View
(1) USB connector: connects the USB flash memory.
(2) micro USB connector: connects the computer. 
(3) Network connector (for equipment configured with the cellular module): 
connects the SIM card.
(4) Battery compartment: stores the battery.
(1) Multifunction connector (for equipment configured with the CPR sensor: 
connects the CPR sensor.