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User’s Manual of SGSD-1022 / SGSD-1022P
SGSW-2840 / SGSW-2840P
338
Class
Usage
Range of maximum power used by the PD
0
Default
0.44 to 12.95 Watts
1
Optional
0.44 to 3.84 Watts
2
Optional
3.84 to 6.49 Watts
3
Optional
6.49 to 12.95 Watts
4
Not Allowed
Reserved for Future Use
Table 4.13-1 Device class
Class 4 is defined but is reserved for future use. A Class 4 signature cannot be provided by a
compliant PD.