2 2.5 Inch Mounts. Front USB 2.0/3.0.450+ Watt Peak High Efficiency ATX PSU. Operating System: Windows 10 Pro 64 bit unactivated. This is a 100% genuine Windows 10 installation that never needs to be activated to continue system use, however it may prompt to activate, but this can be ignored indefinitely or you may enter a key of your own to activate it at any time! · All drivers and manuals that are available will be included Most are available online only! · All system components will be compatible to each other! · All Systems are fully insured and packaged with great care. · I can customize to a certain extent, simply message me! · The pictures provided are for aesthetic representation of the product. The components listed are what will be in the s ystem.