Hi all Can some one please tell me the following electrical specs for the LS7808, as DataLogic have this on the spec sheet, 
Electrical

AC Power requirements

90-265 VAC, 47-63 Hz

4.0 Watts (nominal)

9.6 Watts (maximum)

2.5 Watts (sleep mode)
I know we have listed the Voltage and Current: 5.0 Volts ± 5% @ 450mA (Nominal), but how would ours compare with there's in Watts?Many Thanks Bill Goddard