Provided is an adapter for rack-mounted computing equipment, the adapter including: a chassis; two mounts coupled to the chassis, each of the two mounts having a respective hole shaped to receive and support rack-mountable computing equipment, wherein centers of the holes are between 460 and 470 mm (millimeters) apart from one another in a side-to-side direction of the chassis; two members extending from front of the chassis, the two members being less than 18 mm tall and being between 530 and 550 mm apart in the side-to-side direction; a channel extending at least half a distance along the chassis in a front-to-back direction, the channel defining a volume configured to hold cables extending from a back side of the chassis to a front side of the chassis; and a bus-bar connector mount configured to position a bus-bar connector extending from a back of the chassis.