This black Aluminium mounting front plate allows the installation of one to three poweradjust 2 USB in a vacant 5.25″ drive bay. If less than three poweradjust2 USB are mounted the unused mounting holes in the front plate can be sealed with the included countersunk screws. Extent of delivery: 1x Mounting plate Aluminium black anodized 2x Mounting brackets stainless steel 12x Spacer M3 12x Countersunk screw M3 12x Nut M3 4x Screw M3 Please note: poweradjust 2 USB not included! Note regarding fan mounting: The main reason for damages to the board of the Aquaero are incorrectly connected fans (reverse polarity) or that cables were connected incorrectly during sleeving, resulting in bridging of the Pins. This damages the fan channel and the processor. Should this have happened to you, the manufacturer Aquacomputer offers a fee-based repair service.