Abstract: A retaining frame for components of a personal computer comprises a horizontal portion, with a first section and a second section connected together; and a vertical portion attached substantially perpendicular to the first and second sections. The first section is adapted to secure a disk drive holder, and has at least one leg extending downward to support the retaining frame. The second section is adapted to secure a power supply, and has at least one leg extending downward to support the retaining frame. The vertical portion comprises a speaker seat and a ventilation fan seat at a central location near the first section, and speaker securing rib and fan securing device, respectively, for fastening a speaker and a ventilation fan. The retaining frame with a disk drive holder, power supply, speaker and the ventilation fan mounted thereon is disposed on the lower portion of a computer case, and secured inside the case by a vertical force exerted on the retaining frame by an upper portion of the computer case.

Abstract: A barrier device (1) which can prevent an electrical switch (10) from shorting in the region of its connecting points (11) includes a rectangular base (20) having an opening (21) therein. A first wall (22) extends upwardly from the first edge of the base (20) a second side wall (23) extends upwardly from the second edge of the base (20), a third side wall (24) extends upwardly from the third edge of the base and a fourth side wall (25) extends upwardly from the fourth edge of the base (20). The first and third side walls (22, 24) have a longer length than the second and fourth side walls (23, 25). A clip member (26) is mounted on the first side wall (22) and can engage the third side wall (24).