The VT899 is a 7U μTCA chassis that provides 6 AMC full size single module slots or 3 AMC full size double module that can accept any AMC.1, AMC.2, AMC.3 and/or AMC.4. It provides CLK1, CLK2, and CLK3 to each slot. The VT899 has redundant Cooling Units (CU) for higher MTBF values. There is an option for redundant/non-redundant clock per μTCA specification. The CLK3 option can be configured for the Fabric clock as well as Telcom clock. There is an option for Port 2 and 3 to be directly connected among the adjacent AMCs or to the fabric B (AMC.3 SATA/SAS switch option on the MCH).