A keyboard’s mounting style describes how its plate and PCB assembly is supported inside the case. Tray, top and gasket mounting identify different attachment arrangements. They do not establish a universal sound, typing sensation or quality ranking.
This comparison uses the cited Keychron and KBDfans product documentation to explain what to look for in an assembly diagram. Published construction details do not substitute for acoustic measurements or user testing.
What is being mounted?
The plate positions the switches, while the PCB provides their electrical connections. The way that assembly connects to the case is the mounting arrangement. Identify the actual attachment points before comparing a marketing label.
A mounting diagram can show screws, support posts and compliant pads. It does not tell you how a complete board will sound, or how much the assembly will move under a particular typing load.
Tray mount
In a tray mount, the assembly connects to supports rising from the lower case. The Keychron V1 documentation provides a tray-mount example.
Check where the supports sit, which parts are fastened to them, and how the plate and PCB can be removed for service. Those are concrete structural differences. The label alone does not establish uneven typing feedback, hollowness or inferior construction.
Top mount
In a top mount, the plate’s mounting points connect to the upper portion of the case. That attachment path differs from supports rising from the lower case.
KBDfans lists top mounting among the options for the Tofu65 2.0 PC kit. Verify which arrangement is included or selected for the particular kit. A top-mount option does not mean every configuration uses it.
The presence of perimeter attachment points is a construction detail, not evidence of a cleaner sound or a more consistent user experience.
Gasket mount
In a gasket arrangement, compliant supports sit in the mounting path between the assembly and the case. The Keychron Q1 documentation illustrates a gasket-mount example.
Inspect where the supports are placed and what they support. A visible strip of foam might be acoustic padding rather than a structural gasket. Its location and purpose matter more than its presence in a photograph.
The gasket label does not quantify flex, damping or sound. The assembly’s geometry, plate, supports and other installed parts must be considered together.
Compare attachment details
| Mount | Structural distinction | What to verify | What the label does not establish |
|---|---|---|---|
| Tray | Supports rise from the lower case | Support locations and assembly fasteners | A hollow sound or uneven feedback |
| Top | Plate attaches to the upper case | Attachment points and configured kit option | A clean sound or uniform sensation |
| Gasket | Compliant supports sit in the mounting path | Support material, placement and supported parts | A deeper sound or softer experience |
These are descriptions of mounting arrangements, not a ranked order of quality.
Plate material is a separate specification
A plate’s material and geometry are separate from the mounting method. If a kit offers aluminum, brass, POM, polycarbonate or FR4 options, compare the documented thickness, cutouts and compatibility for those particular plates.
Do not assign a deeper or more premium sound to brass, or a muted sound to every plastic plate. A material label does not provide an acoustic result for the finished assembly.
Also distinguish the plate from the enclosure. An aluminum case does not tell you which plate is installed. Our case material comparison covers that separate part of the specification.
Flex cuts, foam and hybrid arrangements
Flex cuts, when documented, are slots in the PCB or plate. Record their location and the manufacturer’s explanation; their presence alone does not tell you how much the assembly moves.
For foam or other damping layers, check the material, placement and whether they are included in the selected configuration. Neither a layer count nor a foam label supplies a measured sound level or proves one mounting style will sound better than another.
The Tofu65 2.0 PC kit illustrates why variant checks matter: its documentation lists top mount, silicone sock and silicone bowl choices. Compare the chosen assembly rather than collapsing those options into one universal description.
How to use mounting information when buying
Start with the manufacturer’s assembly guide and parts list. Confirm the mount, plate, PCB, stabilizer compatibility and included supports. If a part is optional, keep it separate from the base configuration.
Then decide whether that construction meets a specific requirement, such as service access or support for an alternative plate. For assembly responsibilities, see prebuilt vs custom keyboards.
Stabilizer tuning is another subject; the mounting label does not promise to cure a rattling stabilized key. Switches and keycaps also remain separate purchasing choices.
The keyboard comparator displays stored mounting and case information alongside switch options. Use it to identify a difference worth checking, then confirm the exact configuration on the manufacturer’s page. Choose a mounting arrangement for its documented structure rather than an unsupported promise about sound or feel.
