CThe POSC09100A-1740 is an external power supply with switched-mode, constant voltage, and 9VDC output. It has a power rating of 1A, 9W, and a plug manufactured by POSC. This power supply is designed to provide stable, reliable power for a wide range of electronic devices. It is often used to supply power to sensitive electronic components, such as memory storage units, CPUs, and video cards. It features overvoltage protection and short-circuit protection to ensure the safety of the connected device. It can be used in both office and home settings, and is compatible with a variety of appliances and equipment. The POSC09100A-1740 power supply is a reliable and cost-effective solution for powering various electronic devices.