910RSDC-(9-pin D-sub female to9-pin D-sub male/male module.) For connecting multiple VMM units to onecomputer serial port, this 10 ft. interconnect cable is available. Thiscable effectively connects a number of VMM RS-232C ports to one RS-232computer serial port, creating a "daisy chain." One cable is requiredfor each unit desired within the chain. This cable is used to daisychain VMM-D1, VMM-D3, or VMM-T1 control units.