ASROCK iBOX-420-DL User Manual page 7

Volume
(Liters)
Operating
Temperature
* For iBOX-420-DL, it is not recommended to install 2.5" HDD. If you install the 2.5" HDD, please keep the iBOX-
420-DL in a vertical position to ensure better cooling performance.
0.6L
0°C~50°C
iBOX-420-DL
3