Adder RED-PSU PRO Series Power Supply Units, For Powering Up To 8 Or 16 Adder Devices, RED PSU 5VDC Dongle Or 12 VDC Direct Power Cable Required Per Powered Device, 19" Rackmount (RMK4D-R2 Rackmount Bracket Sold Separately), Single Or Redundant 120VAC Power Inputs. Product ID: RED PSU PRO Series