Computer enclosure with frame for disk drive

A computer enclosure comprising:

• a chassis comprising a chassis bottom wall and two chassis sidewalls located on the chassis bottom wall, a positioning post located on each chassis sidewall, each chassis sidewall defining a positioning hole;
• and
• a frame comprising a mounting bracket and a retaining bracket extending from the mounting bracket;
• the mounting bracket defining a through opening and comprising a mounting bracket top wall and two mounting bracket sidewalls connected to the mounting bracket top wall;
• each mounting bracket sidewall defining a slot and a fastening hole;
• fasteners are engaged in the positioning holes and the fastening holes, to secure the frame to the chassis;
• the retaining bracket defining a holding space configured for receiving a disk drive;
• the holding space being in communication with the through opening;
• wherein when the positioning posts of the chassis are engaged in the slots of the mounting bracket, the positioning holes arc aligned with the fastening holes of the mounting bracket;
• each slot comprises an entrance and a holding portion communicating with the entrance;
• each positioning post comprises a head and a neck;
• the entrance is configured to allow the head to be inserted therethrough;
• and the holding portion is configured to receive the neck and prevent the head from being removed in a direction that is substantially perpendicular to the corresponding mounting bracket sidewall;
• the entrance has an extending direction substantially perpendicular to the mounting bracket top wall, and the holding portion has an extending direction substantially parallel to the mounting bracket top wall.