GS-5220-Series (V4) User Manual

Table Of Contents
Users Manual of GS-5220 PoE Series Managed Switch
375
The PD is classified based on power. The classification of the PD is the maximum power that the PD will draw across all input
voltages and operational modes.
A PD will return to Class 0 to 8 in accordance with the maximum power draw as specified by Table 4-7-1-1.
Class
Usage
Range of maximum power used by the PD
Class Description
0 Default 0.44 to 12.95 watts Classification unimplement
1
Optional 0.44 to 3.84 watts
Very low power
2 Optional 3.84 to 6.49 watts Low power
3
Optional 6.49 to 12.95 watts (or to 15.4 watts)
Mid power
4
Valid for Type 2 (802.3at)
devices,
not allowed for 802.3af devices
12.95 to 25.5 watts
High power
5
Valid for Type 3 (802.3bt)
devices
40 watts
6
51 watts (4-pair)
7
Valid for Type 4 (802.3bt)
devices
62 watts (4-pair)
8
71.3 watts (4-pair)
Table 4-7-1-1 Device Class.