Editing Dell KB212 (section)

==Variants==
===Primax KB4021===
The [[Korea Certification]] number (인증번호), per the box and bottom case, is PMX-KKB4021 (B). The box gives model numbers Primax KB4021 and Primax KB4022. The UK English version in black is model Primax KB4021 with Dell part number 0DJ491.

<gallery widths=250 heights=187>
File:Primax KB4021 -- top.jpg                      | Top
File:Primax KB4021 -- bottom.jpg                   | Bottom
File:Primax KB4021 -- box, top.jpg                 | Box, top
File:Primax KB4021 -- box label.jpg                | Box label with Dell part number and manufacture date (2013-10-18)
File:Primax KB4021 -- box, bottom.jpg              | Box bottom, with [[Korea Certification]] details
File:Primax KB4021 -- rear details.jpg             | Details moulded into the rear of the case
File:Primax KB4021 -- rear label.jpg               | Rear label
File:Primax KB4021 -- KCC certification number.jpg | KCC certification
File:Primax KB4021 -- controller, top.jpg          | Controller board, top; labelled "DELL Ruby Sonix Ver0.2 20130411" dated 1335 (35th week 2013) 
File:Primax KB4021 -- controller, bottom.jpg       | Controller board, bottom
File:Primax KB4021 -- internal cable routing.jpg   | Internal cable routing
</gallery>

===Silitek SK-8120===
The Silitek-made version of this keyboard is model SK-8120. Externally it is virtually identical to the Primax-made version, with the position of the screw holes on the rear being the most obvious difference. Two of the screw holes are concealed by the rear stationary feet, which have to be prised off in order to disassemble the keyboard. The feet should stick back on so long as the adhesive remains tacky.

In the example below, the PCB date on the controller is 2011-02-17, while the PCB manufacture date is 1436. The overall keyboard manufacture date is 2014-01-19. The PCB manufacturer was Leo Electronics Inc, [[UL File Number]] E108570.

<gallery widths=250 heights=187>
File:Silitek SK-8120 -- model details.jpg       | Model details with Silitek model number
File:Silitek SK-8120 -- rear label.jpg          | Dell label
File:Silitek SK-8120 -- keycap detail.jpg       | Keycap detail; at least three mount cross sections can be seen
File:Silitek SK-8120 -- removed foot.jpg        | Stationary foot removed to reveal a hidden screw
File:Silitek SK-8120 -- domes and membranes.jpg | Rubber domes and membranes
File:Silitek SK-8120 -- controller.jpg          | Controller PCB
</gallery>