THIS IS A NEW APW 48VDC 4.0A COOLING FAN ASSEMBLY, P/N: DB928-4830. UNIT IS RATED 48VDC(32-60V) 4.0A. AS SHOWN, IT COMES WITH THE FAN CONTROLLER UNIT BY ASPEN MOTION TECHNOLOGIES PART # M-12771-23 Rev A34, 48VDC(32-60V) 5.0A, E-1760-0008-10.