new in box with instructions. no need to buy a new cpu heatsink if you want to switch to AMD Ryzen CPU 2 each and i have 18 of those left. all for $30. AMD AM4 Upgrade kit (RR-ACCY-AM4B-R1) Please youtube how to use; very straight forward installation. Compatability: * MasterAir Pro 4 * MasterAir Pro 3 * Hyper 412 Series * Hyper 212 EVO * Hyper 212 X