[ENG] NetPing NP-SM4, User guide -[SM4] NP-SM4 Switch Overview
[SM4] NP-SM4 Switch Overview
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To plug an external power supply unit, a socket DJK-02A with a 2.1 mm dowel is used.
It is recommended to use
Power Supply Unit 48V 1.5A
as an external power supply unit of a switch.