If your motherboard comes with a pre-installed CPU coolerretention module, please first remove it by unscrewing it fromthe backplate. The SecuFirm2™ mounting system will installdirectly to the stock backplate, so please keep it in place.Removing the stock retention module –Putting the backplate in place1Caution: Choose the alignment of the mounting bars accordingto the desired final orientation of the cooler:If there are residual traces of thermal paste or thermal pads onyour CPU, please clean them off first. Then press a small drop(4-5mm diameter) of NT-H1 onto the centre of the heatspreader.Applying the thermal paste3Dear customer,Congratulations on choosing the Noctua NH-U12S chromax.black. The NH-U12S is the latest version of Noctua’s award-winning NH-U12 coolers. First introduced in 2005, theNH-U series has become a standard choice for premiumquality quiet CPU coolers and won more than 400 awardsand recommendations from leading international hardwarewebsites and magazines. Enjoy your NH-U12S!Yours sincerely,Roland Mossig, Noctua CEOThis manual will guide you through the installation process ofthe SecuFirm2™ mounting system step by step.Prior to installing the cooler, please consult the compatibility liston our website (www.noctua.at/compatibility) and verify thatthe cooler is fully compatible with your motherboard. Pleasealso make sure that your PC case offers sufficient clearancefor the cooler and that there are no compatibility issues withany other components (e.g. tall RAM modules). Double checkthat the heatsink and fan clips do not make contact withthe VGA card or other PCIe cards. Noctua cannot be heldresponsible for any damage or losses caused by compatibilityissues. Should you encounter any difficulties, please check theFAQs on our website (www.noctua.at/faqs) and don’t hesitateto contact our support team at support@noctua.at.Multilingual versions of this manual are available on our web-site: www.noctua.at/manualsRequired mounting parts:Please first choose the correct set of plastic spacers and thecorrect set of holes on the mounting bars depending on whetheryou are using a socket AM4 or a socket AM2(+)/AM3(+)/FM1/FM2(+) motherboard:First put the plastic spacers onto the screw threads of the back-plate, then fix the mounting bars using the four long screws.Make sure that the curved sides of the mounting bars arepointing outwards.AMD stock backplate(included with the motherboard)4x NM-APS4Plastic spacers forAM44x NM-ALS1Screws2x NM-AMB11 Mounting bars4x NM-APS5Plastic spacers forAM2(+)/AM3(+)FM1/FM2(+)If your motherboard does not come with a pre-installed CPUcooler retention module, the AMD stock backplate should beincluded with the motherboard accessories. Please put thebackplate on the rear side of the motherboard so that the screw-threads of the backplate stick through the mounting holes ofthe motherboard as shown below. If your motherboard doesnot include a stock backplate, please contact Noctua customersupport at support@noctua.at.Attaching the mouting bars2NM-APS5 (white)AM2(+)/AM3(+)FM1/FM2(+)NM-APS4 (grey)AM4Use the grey NM-APS4 spacers for AM4 and the white NM-APS5 spacers for AM2(+)/AM3(+)/FM1/FM2(+).Use the set of holes marked with “4” for AM4 and the set of holesmarked with “3” for AM2(+)/AM3(+)/FM1/FM2(+).AM2(+)/AM3(+)FM1/FM2(+)NOCTUA NH-U12S chromax.blackINSTALLATION MANUALAMDScan this code to displaymultilingual manuals onyour phone.Caution: Please first take off the fan as well as the protectioncover at the bottom side of the heatsink.Fastening the heatsink to the CPU4AM4Caution: Applying too much thermal paste will lower heatconductivity and cooling performance!