Apos Preonic Rev 4 Ortholinear vs Mechboards kingly keys RoMac

No. Its listed layout size is Numpad, and the compatibility rule specifies that it is not a full keyboard. The vendor describes it as an ortholinear design with a dedicated number row.

No. The RoMac is listed as a macropad, and its compatibility rule says it is not a full keyboard. The vendor describes it as a pad intended to be used alongside another keyboard or by itself.

Yes. Its PCB is listed as hot-swappable, so the switches can be changed without desoldering them. The Apos product page lists linear and silent tactile switch options as well as a no-switch option.

No. The RoMac's switches are soldered, and changing them requires soldering. The vendor says the kit is compatible with MX and Choc V1 PCB-mount switches.

Yes. The Preonic is listed with QMK support, and the vendor describes its platform as QMK-compatible. The vendor also identifies an RP2040 controller.

The product metadata lists an OLED screen, and the vendor specifies OLED support for the Fauxmac version. The vendor's RoMac kit contents list does not include an OLED, so check which version is being sold.

The RoMac product metadata lists knob support. The vendor's Fauxmac kit contents include a rotary encoder and knob, while the standard RoMac contents do not list those parts.

The Preonic has per-key RGB backlighting and integrated underglow according to the Apos product description. The RoMac metadata says RGB is absent, though the vendor lists underglow as a Fauxmac feature.

The Preonic offers hot-swappable switches, QMK support and a PCB with up to ten encoder positions. The RoMac is a kit with soldered switches, and the vendor lists an RP2040 controller in the kit contents.

The Preonic has an anodized CNC aluminum case. The RoMac metadata lists an acrylic case material, while the vendor describes an FR4 bottom and, for Fauxmac, an acrylic middle piece.

Choose the RoMac if you want a macropad rather than a numpad keyboard. Choose the Preonic if you need its dedicated number row and hot-swappable switches; both products are described as ortholinear.