Video matrix power module ensures that the system is always working The Aten VM-PWR400-A Video Matrix Power Module is a hot-pluggable and can be easily replaced without shutting down the system. If the primary power shuts down, the secondary power supply can automatically take over. The ATEN ensures that your investment is well protected while delivering outstanding performance. The VM1600 can be equipped with dual power modules to ensure that the system is always working. The VM1600 has two power slots that can connect to two different power supplies.