Noctua NM-i115x| Installation ManualFixing the fastening-brackets to the coolerStep1First take off the original fastening-brackets from the cooler byunscrewing the four screws.Required mounting parts:Dear customer,Congratulations on choosing a Noctua cooler for your LGA115x system.We always like to think of our coolers as safe long-term investments: Notonly are they built to last, we also provide upgrade kits so that you cankeep using your trusty Noctua heatsink when you do a system upgrade.Enjoy your Noctua cooler on LGA115x!Yours sincerely,Roland Mossig, Noctua CEOThis SecuFirm2™ Mounting-Kit for LGA115x is compatible with thefollowing CPU coolers: NH-C12P, NH-C12P SE14, NH-C14, NH-D14, NH-D14 SE2011, NH-L12, NH-U12, NH-U12F, NH-U12P, NH-U12P SE1366,NH-U12P SE2, NH-U9, NH-9F, NH-U9B, NH-U9B SE2.This manual will guide you through the installation process step by stepusing an NH-U12P heatsink as an example. Please note that the instal-lation procedure is identical for all models.Should you encounter any difficulties, please check the FAQs on ourwebsite and don’t hesitate to contact our support team at support@noctua.at. Noctua cannot be held responsible for any damage or lossescaused by compatibility issues. Multilingual versions of this manual areavailable on our website: www.noctua.at/manualsThen fix the new NM-IFB2 fastening brackets to the cooler (you caneither use the original screws or the supplied NM-SSC1 screws).In case you want to use the cooler on an assembled system and your casedoesn’t have a cut-out at the rear side of the mainboard tray, you firsthave to remove the mainboard from the case in order to be able to installthe supplied backplate.Removing the mainboardStep 2Caution: Choose the alignment of the mounting bars according to thedesired final orientation of the cooler:Caution: Make sure that the curved sides of the mounting bars arepointing outwards.Fix the mounting bars using the 4 thumb screws.Caution: Gently tighten the screws until they stop, but don’t useexcessive force.4x NM-ITS1Thumbscrews4x NM-SSC1Short Screws4x NM-IPS1Plastic SpacersCaution: Make sure to install the fastening brackets in the correct position:2x NM-IFB2Fastening Brackets2x NM-IMB2Mounting-Bars1x NM-IBP2LGA115x BackplateCaution: The supplied backplate will install over the mainboard’s stockbackplate, so the mainboard’s stock backplate must not be taken off.Attaching the backplateStep3Place the backplate on the rear side of the mainboard so that the boltsstick through the mounting holes.Caution: Please make sure that the three cut-outs in the suppliedbackplate align with the screws of the mainboard’s stock backplate.Attaching the backplateStep4First put the plastic spacers onto the bolts of the backplate, then add themounting bars. Use the centre holes of the mounting bars.Step 5Applying thermal pasteIf there are residual traces of thermal paste or thermal pads on your CPUon the base of the heatsink, please clean them off first. Then press a smalldrop (4-5mm diameter) of thermal compound (e.g. Noctua NT-H1) ontothe centre of the heatspreader.Caution: Applying too much thermal paste will lower heat conductivity andcooling performance!Orientation A Orientation B