We are offering open frame power supply, 1. small size and cooling by free air convection 2. high efficiency and power saving for single 3. universal ac input /full range 4. protections: short circuit/opp/ovp 5. Size:5x 3or 4x 3 (optional) 6. applications: micro computers, peripherals, portable equipment, networking 7. Emi meets fcc/cispr class b.