Both are OK.

The microwave oven can dry the meat, but it will take a long time. It is more suitable to use the dryer directly.

Microwave oven principle: A microwave oven is a cooking appliance that uses food to absorb microwave energy in the microwave field to heat itself. The microwave generated by the microwave generator in the microwave oven establishes a microwave electric field in the microwave oven cavity, and certain measures are taken to make this microwave electric field evenly distributed in the oven cavity. Food is placed into the microwave electric field, and the cooking time is controlled by the control center. and microwave electric field strength to perform various cooking processes.