The RMC6440A-B is a 4U high rackmount computer supporting a Standard ATX motherboard with AMD Ryzen processors. It features three 5.25” open drive bays, one 3.5” open drive bay, 2 x easy swap rear fans & front access dual USB ports, and a front drive panel door with keylock. Designed to serve in a wide range of applications, the RMC6440A-B offers flexible system configurations such as additional storage space, removable drive bay options, add-on cards, graphic cards, and Windows OS.