NetPing NP-SM4 User Manual page 11

• Close a lid of a switch;
• Turn on power supply of a switch.
A maximum capacity of a NP-SM4 switch (and all PoE consumers, connected to it), should not exceed 30 watts
according to the 802.3at standard. Consumers can be connected to different ports of NP-SM4 switch or to one port,
there is no limit to a total power. A maximum power consumption of NP-SM4 switch itself is 2.5 watts, which gives
an oppurtunity to join up to 10 NP-SM4 switches in a circuit, using short patch cords. However, it is not
recommended to join more than four switches in a circuit.
There is a need to take into account a voltage drop on long lines, as for 100 meter cable segment of class 5 a voltage
drop can make up to 10 V on a device. Thus it is possible to join only two devices in a circuit.
[ENG] NetPing NP-SM4, User guide -[SM4] PoE Technology in NP-SM4 Switches
[SM4] PoE Technology in NP-SM4 Switches
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