The power cable is plugged into the monitor or power supply unit. So the better and only correct solution is to replace the whole cable, which you get free of charge from Digitec. An adapter is completely impractical in power strips and multiple sockets because of its size.
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Digitec (or any other Swiss dealer) is obliged to supply electrical appliances with a Swiss plug. If the appliance is supplied with a foreign plug, a suitable replacement cable should be supplied if the mains cable is pluggable or, alternatively, a suitable adapter if the mains cable is permanently connected.
If the appliance is delivered without a suitable plug, complain to the customer service and insist on a cable or an adapter, free of charge.
Info Digitec -->
https://helpcenter.digitec.ch/hc...
Point 1 -->
https://www.esti.admin.ch/de...