This is a message for all computer people who like to build your own home computers in order to have a high end product. Tech people who order Computer Parts over the internet for home or office need to know the ZAMMAN CO. who makes power supplys for computers, Zalman products will "NOT" work. For Example: Zalman model ZM1000-HP will not work, brand new out of the box. Zalman products come with a 3 year Warranty, the company will not onder its Warrantys. They will not Repair/Replace/or refund items.