The Astec AA22770 400W PSU 300-1568-01 is a Sun SunFire V240 power supply unit designed to provide reliable and efficient power to servers and networking equipment. With a brand name of Sun, known for quality and innovation in computer hardware, this power supply unit is a trusted choice for enterprise networking setups. The 400W output capacity ensures that it can handle the power demands of a variety of server components, making it a crucial component for maintaining the functionality of a server network. ES-2-6-4-4