There are up to seven different types of fasteners used during this build. This diagram can be referenced to confirm that you are using the correct ones. Use the included H1.5 hex bit for M2 fasteners and H2.0 bit for M2.5/M3 fasteners.

• Do not skip this step; we cannot guarantee a replacement PCB that was not tested prior to assembly.

• Place the PCB facedown, connect the daughterboard to the PCB, and plug it in. Be careful not to bend the connector pins.

• Open VIA, on the Configure tab click 'Authorize Device' and select the M75 PCB. Navigate to the Key Tester Tab, and enable Test Matrix Mode.

• Touch the ends of your tweezers to the metal contacts under each switch position, lighting up each key in VIA. Note that the function key will not light up.

• In the rare event that keys do not light up, pause your build here and contact support@modedesigns.com.

• Align one end of the foot in one corner of the recessed channel, then gently lower the strip into place. Take care not to stretch the foot.

• Press on the feet to ensure they are properly adhered, smoothing out any raised areas.

• If the foot extends past the recess, it has been stretched. Attempt to squeeze it back into the recess rather than cutting it.

• Carefully place the Sonnet facedown.

• Use the provided H2.0 hex bit to remove the case fasteners and separate the bottom case from the top case.

• Disconnect the daughterboard cable from the PCB.

• With the cable connected to the daughterboard, fasten it into the bottom case using the M2x3 fasteners (four total).

• Take care to not overtighten the fasteners, or you may damage the daughterboard.

• If you plan to use the optional PE foam, lay it on top of the PCB now.

• Stabilizers ensure that long keys actuate properly, no matter where you press. The stabilizer wire you need for the spacebar will depend on your choice of layout.

• Insert the non-threaded end of the stabilizer into the larger cutout on the PCB, then pivot the threaded ends into place.

• While bracing the front of each stabilizer, screw it into place from the underside of the PCB. Repeat for the remaining stabilizers.

• Before installing your switches, inspect them to ensure the two metal pins on the underside of each switch are straight. Straighten all pins with tweezers if any are bent.

• If you plan to use the optional plate foam for a more dampened sound, lay it on top of the PCB now.

• Remove the mylar standoff covers, align the plate with the front of the PCB, and fasten it into place with the M2x5 flat head fasteners (four total).

• Insert switches into the plate/PCB. Take care to brace the back of the hotswap socket with a finger while pushing the switches into place with your thumb. Do not apply downward pressure to the surface of the plate itself.

• Install remaining switches.

• Before installing your switches, inspect them to ensure the two metal pins on the underside of each switch are straight. Straighten all pins with tweezers if any are bent.

• Insert switches into the corner positions of the plate. This will help to align the plate with the PCB.

• If you plan to use the optional plate foam for a more dampened sound, lay it on top of the PCB now. Align the plate with the front of the PCB, and push the corner switches into place.

• Align the plate with the front of the PCB, and push the corner switches into place.

• Install remaining switches, working your way in from the corner switches.

• Solder each of the switches to the PCB.

• Switches that are not properly installed can cause alignment issues when the case is closed.

• Check that the plate is not sagging below the tops of the switches.

• Check that each switch pin is fully seated into the PCB.

• Slide the silicone plate caps onto the plate tabs (five total).

• Gently lower the accent into the recess in the top case.

• Flip the top case over, supporting the accent from the top side. Screw in the accent to the top case using the M2x10 fasteners (four total).

• Gently lower the internal weight into the recess in the bottom case.

• Secure the weight to the bottom case using the shorter M3x5 flat head fasteners (two total)

• Gently lower the internal weight into the recess in the bottom case.

• Lay the silicone base on top of the internal weight, aligning it with the weight’s screw holes.

• Secure the silicone base and weight to the bottom case using the longer M3x7 flat head fasteners (two total)

• Place the top case facedown.

• Gently lower the plate/PCB assembly into the top case.

• Secure the plate to the top case via the tabs along the top and bottom edges with the M2x5 fasteners (five total).

• Take care to avoid over tightening fasteners such that they go past the silicone plate caps.

• Place the top case facedown.

• Gently lower the plate/PCB assembly into the top case.

• Hold the bottom case firmly in one hand and align it with the notch on the bottom edge of the top case.

• While still holding the bottom case, use your other hand to attach the daughterboard cable to the PCB.

• Check the orientation of the daughterboard cable and ensure that it is fully plugged in. It should not come loose if inserted properly.

• Close the bottom case onto the top case, ensuring that the cable sits inside the recessed area of the bottom case.

• Fasten the bottom case to the top case with the M2.5x12 fasteners (two total).

• Lightly tighten the fasteners as needed such that the top and bottom case are flush. Do not overtighten.

• If you notice there is any rubbing of keycaps against the case, remove the bottom case and ensure that the plate/PCB assembly is properly aligned. It may shift slightly during final assembly.

• Install your choice of MX-compatible keycaps.

• Test the stabilized keys for any undesired rattling noises.

• If rattle is detected, lift the corresponding stem up and inject lube into the slider around the ends of the stabilizer wires.

• If you are using your Sonnet with a Mac, switch the Command and Option key positions in System Preferences. You will only need to do this one time, and the positions will be correct for both Mac and PC usage.

• The Sonnet is fully compatible with VIA and QMK. You can use the graphical interface of VIA to program any of the keys or layers on the Sonnet.

• If using QMK, you may enter bootloader mode by pressing the physical reset button on the board or pressing Fn + Esc.

• If any of the keys do not actuate properly, it may be due to a bent switch pin during installation. Remove that keycap and switch using a keycap/switch puller. If any metal pins are bent, straighten them with a pair of tweezers.