An electronic device includes an enclosure and a fixing member. The enclosure includes a bottom wall configured with a plurality of positioning posts. Each of the positioning posts includes a hook and a base connecting between the hook and the bottom wall. The fixing member includes a positioning portion. The positioning portion defines an engaging hole and a plurality of positioning teeth configured on an inner edge of the positioning portion. The positioning teeth surround and communicate with the engaging hole. The positioning teeth and the engaging hole cooperatively form a passageway through which the positioning posts pass. The enclosure is configured to 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.