First remove the four top screws holding the top panel and the four screws at the back holding the back panel. Pop the interface out of the housing.

The board is held by massive stand-offs which help to avoid flexing. There are no screws here.

The housing is made of very solid and massive ABS. Nothing else can be seen or serviced from the bottom of the unit.

The bottom plate is made of ca. 1mm thick, painted steel sheet.

The unit is very easy to open and to repair. Nice!

The unit weighs 880g. This is a lot for a sound card in a mostly plastic case. This weight and robustness are achieved by using a metal plate and an unusually thick ABS plastic case.