Check the CPU heat sink, it's probably filled with dust.
Prety dumb of them, they don't offer any manuals to download.
As it's usualy only a dumb switch, it's not a polarised connector and can be inserted both ways. You can do some trial and error to find the correct location. It's beter is the other connectors are still in place.
You may contact them by e-mail at:
technical AT zoostorm.co.uk