This part is a kind of semiconductor called LGA775.

Function of this product has Mounting Kit.

Manufacturers : Noctua

Image and pinout :

Some of the text within the PDF file :

NH-U12P-LGA775 | Installation Manual the backplate’s screw sockets with the mainboard’s screwholes. Noctua LGA775 Mounting-Kit Installation Manual Thank you very much for choosing a Noctua cooler. This manual will guide you through the installation process step by step. Prior to installing the cooler, please consult the compatibility list on our website and verify that the cooler is fully compatible with your motherboard. Should you encounter any difficulties, please check the FAQs on our website and don’t hesitate to contact our support team at support@noctua.at. Noctua cannot be held responsible for any damage or losses caused by compatibility issues. Multilingual versions of this manual are available on our website: www.noctua.at Required mounting parts (from [ ... ]

LGA775 PDF Datasheet Download