The INT204 is housed in a silver anodized aluminum frame.
Two power sources are required for the INT204. One is the bus power fed via the USB connector, the other is an external power supply which is supplied with the INT204 unit. This scheme allows to have the input and output sections of the INT204 galvanically isolated.
The sampling frequency is generated with an internal generator in the INT204. This makes sure the transfer between computer and D/A Converter is low jitter. Digital Input A USB type B connector is used a connection to the computer.
There are one XLR socket, one BNC socket and one RCA socket. BNC and RCA sockets are driven by the same driver chip.