1. osewill RCX SC1U Quick Installation Guide Quick Installation Guide Intel LGA775 LGA1156 Backplate and screws mounting 1 Place the correct backplate LGA775 or LGA1156 under the motherboard in line with the four mounting holes surrounding the CPU 2 Place the cooler on the CPU aligning the spring loaded screws with the backplate 3 Secure the cooler by using a philips screwdriver to turn the screws ina clockwise direction Fasten the screws in a crosswise manner To uninstall the cooler undo all four screws in an anticlockwise direction Thank you for purchasing a quality Rosewill Product Please register your product at www rosewill com for complete warranty information and future support for your product