A frame for mounting a data storage device, includes a holder configured for mounting the data storage thereto, a baffle board mounted to the holder, and a V-shaped air guiding board mounted to the holder between the baffle board and the data storage device. An intake defined in the baffle board is configured to let airflow therethrough to cool the data storage device mounted to the frame. The opening of the “V” of the air guiding board faces the data storage device. Because of the V-shaped air guiding board, the frame efficiently dissipates heat from and around the data storage device.