New in the box Antec power supply. Purchased a few years ago for my desktop computer but never installed it. The computer problem was bad capacitors on the motherboard, not the power supply. I had removed the UPC from the box and sent for a rebate, so I couldn't return it. I thought I could use it sometime in the future on one of my computers, but my computers are now "SFF" small form factor so this power supply will not fit in the cases.Upgrade your PC with this powerful 400W power module from Antec. Designed to deliver reliable and efficient performance, this modular power supply is perfect for computer enthusiasts and professionals alike. With its advanced features, including a maximum power output of 400W and a sleek NEO ECO 400C model, this power supply is a must-have for anyone looking to enhance their computer's performance. Whether you're building a new computer or upgrading an existing one, this Antec power supply is the perfect choice. With its versatile design, it's compatible with a wide range of devices and components, making it an essential addition to any computer enthusiast's toolkit. So why wait? Order your Antec NEO ECO 400C power supply today and experience the ultimate in performance and reliability for your PC.