An electronic device includes an enclosure and a fixing member. The enclosure includes a bottom wall configured with a plurality of positioning posts perpendicularly protruding from an outer surface of the bottom wall. Each of the positioning posts includes a hook and a base connecting between the hook and the bottom wall. The fixing member attached to the bottom wall includes a positioning portion. The positioning portion defines an engaging hole engageable with the positioning posts and a plurality of positioning teeth configured on edges of the positioning portion and engageable with the base. The enclosure can be positioned at different angles relative to the fixing member due to friction between the positioning teeth of the positioning portion and the base as well as tight attachment of the hook to the positioning portion.