The top of the Arc Mini R2 includes a reset switch, microphone and headphone jacks, the power button with integrated LED, two(2) USB 3.0 ports, and a 3-speed fan controller for up to three(3) fans.
Removing two thumb screws allows the top panel to be removed.
Underneath the top panel is the same foam dust filter as the front.
Under the top panel is space to mount two(2) x 140mm fans (1 included), or up to three(3) x 120mm fans.
With the fan mountings offset for the 120mm fans, there is room to clear the motherboard for thicker radiators or push-pull arrangements. (a 360 radiator will require removal of the 5.25” drive cage)
Removing the front panel of the Arc Mini R2 is done with a firm pull of the bottom.
The 120mm fans are mounted straight to the front panel.