Functions Of The Interfaces On The Development Board; Power Interface; Sim Card Socket; Figure 3-1 External Power Interface Circuit - Huawei EM820W User Manual

HUAWEI EM820W HSPA+ PC Embedded Module
User Guide
3

3.1 Power Interface

The power interface is used to connect an external Mini USB Port to the EM820W
module. Thus, power can be supplied to the module. Figure 3-1 shows a circuit of the
external power interface.

Figure 3-1 External power interface circuit

3.2 SIM Card Socket

A development board is equipped with a SIM card socket. You can easily insert and
remove a SIM card. Figure 3-2 shows a SIM card circuit.
Issue 01 (2010-12-30)
Functions of the Interfaces on the
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Functions of the Interfaces on the
Development Board
Development Board
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