The Sharp PC3SD21YXPCH is a power supply unit designed for use with certain Sharp LCD televisions. It has an input voltage of 100-240V~, 50/60Hz and a total output wattage of 21W. It features an integrated circuit to provide over-voltage, over-current, and short-circuit protection. This power supply is made of high-quality material, allowing it to last longer and operate more reliably than other power supplies. It also features a plug-in design, which makes it easy and convenient to install.