D-Link DI-304 User Manual page 92

Ventilation
Operating Temperature
Storage Temperature
Humidity
Dimensions
Emissions (EMI)
Telecom
Safety
Fanless
0 - 50 C (32 - 122 F)
-25 - 55 C (-13 - 131 F)
5% - 95% non-condensing
22.4cm x 13.2cm x 3.5cm
CE,C-Tick
CTR-3
UL/CSA/TUV, C-Tick (for power adapter)