Dedion30 is showing his Sinclair PC200 configuration, the first one to the left in qwerty (not on), the PC200 in the middle is his latest buy in Azerty which is using his ISA riser showed in the System.CFG link.

Nice configuration including a MIDI tower at the start of the video avec Roland expanders MT-32 and SC-88 pro, and a Yamaha expander at the top. The riser is a prototype and isn't yet available.