A 16x5 ortholinear keyboard that has many layout options, including: full grid, left- or right-side full sized numpads, and Many spacebar locations. Standard in-switch backlighting. See primekb.com for full details of possible layouts.
Keyboard Maintainer: MxBlue
Hardware Supported: Prime_O PCB, ATMega32u2
Hardware Availability: GB
Make example for this keyboard (after setting up your build environment):