Assembly Instructions SMARTCASE S520__________________________________________________________________________________________________________________________________________________________Page 5 of 12 V1.1 - 07/2019 www.fujitsu.comWLAN module / M.2. module assemblyFirst remove the M.2 mounting screws.Insert M.2 modules angular into the socket (while paying attention to the coding / notch).Both modules, as shown in the picture, have to be touched on the outside edges only.For the M.2 Key M SSD and M.2 Key E WLAN/BT, the assembly nuts and screws are pre-installed.Recommended torque for the M.2 screw is 0.2Nm, and 0.3Nm for the nut.Processor assemblyFirst open the CPU socket and remove the socket protection. Then insert the CPU. Consider the mechanical coding ofthe CPU. After installing the CPU close the socket carefully.Pay attentionto the notch2230 screw / nutposition2280 screw /nut position