picopsu
aliexpress.com/wholesale?ltype=wholesale&d=y&origin=y&isViewCP=y&catId=0&initiative_id=SB_20170608180144&SearchText=picopsu&blanktest=0&tc=af
it's just a dc-dc converter (12v from server psu to 12v, 5 and 3v atx + 4/8pin cpu + some molex & sata)