Editing Acorn BBC Microcomputer (section)

===Type 2===
[[SMK J-M0404 series]] switches with angled keystems, mounted onto a steel plate. Known manufacturing dates are from 1984. The OEM was [[SMK]], part number 401KBM-006-90RⒶ. The shift keys, space bar and possibly also tab use the brown and beige low-friction version of the switch.<ref name="8bs" /> These switches have been reported to be unreliable.<ref name="8bs" /> The keycaps were sourced from SMK, as they fit SMK's moulding style.

The return key uses a pair of low-force switches in tandem, connected together on the PCB.<ref name="Correspondence" /> These switches have the brown slider indicative of low friction switches, together with a beige base.

<gallery widths="250" heights="187">
File:BBC Micro SMK keyboard -- switches and keycap.jpg | Standard switches and keycap
File:SMK vintage linear, low friction variants.jpg     | Low friction switches: standard weight (left) and low force (right)
</gallery>