Editing Apple Desktop Bus Keyboard (section)

==Variants==
===Alps===
Made in Japan. [[Alps SKCM Orange]] and [[Alps SKCM Salmon|Salmon]] switches. Caps lock is [[Alps SKCL Lock]]; in one orange Alps version, this switch is cream.<ref>Think Different — [http://applefan.tistory.com/42 Apple II gs Keyboard수리 II]</ref> The change to salmon Alps may coincide with the apparent discontinuation of orange Alps around 1991.

Most instances of these keyboards have a simple label, with part number 658-4081.<ref name="DT-Orange-SMK" /> At some stage, the rear label was brought in line with the Taiwan-made version; these are labelled as model A9M0330 as per the SMK version.<ref>바람,별,구름 — [http://sidewinder007.tistory.com/entry/Apple-iigs-%EC%8B%A0%ED%92%88 Apple iigs 신품]</ref> It would appear that the keyboards with the new label are the ones with salmon Alps switches, but this is presently speculation. 

The yellowing characteristics suggest ABS for the case and space bar, and a different material (e.g. PBT) for the remaining keys.<ref>Flickr — [http://www.flickr.com/photos/66071596@N00/2792335474/ Newton Keyboard Size vs. Apple IIgs Keyboard]</ref>

====Orange Alps====
This is likely the earlier version from Alps, with a simple rear label and orange Alps switches.

<gallery widths=250 heights=167>
File:Apple 658-4081 -- top.jpg               | Top
File:Apple 658-4081 -- bottom.jpg            | Bottom
File:Apple 658-4081 -- rear label.jpg        | Rear label
File:Apple 658-4081 -- switch.jpg            | Orange Alps switch
</gallery>

====Salmon Alps====
There appears to be correspondence between the use of salmon Alps switches and the revised rear label that matches the label found on the SMK-made version.

<gallery widths=250 heights=167>
File:Apple_M0330_top.jpg                     | Top view
File:Apple_M0330_bottom.jpg                  | Bottom view
File:Apple_M0330_profile_right.jpg           | Right side profile
File:Apple_M0330_profile_left.jpg            | Left side profile
File:Apple_M0330_ADB_port_1.jpg              | ADB port detail
File:Apple_M0330_logo_power.jpg              | Detail of Apple logo and power key
File:Apple_M0330_opening_case.jpg            | Opening case
File:Apple_M0330_without_case.jpg            | Without case
File:Apple_M0330_controller.jpg              | Controller, dated 9041
File:Apple_M0330_PCB.jpg                     | PCB
File:Apple_M0330_PCB_Apple_Computer_logo.jpg | PCB detail showing Apple Computer logo
File:Apple_M0330_PCB_ALPS_logo.jpg           | PCB detail showing ALPS logo
File:Apple_M0330_label.jpg                   | Product label; note the newer design
</gallery>

===SMK===
Made in Taiwan, with white tactile [[SMK Alps mount]] switches.<ref>Mousefan — [http://mousefan.telcontar.net/image/gstaiwan.htm Apple A9M0330 ADB TAIWAN]</ref> The PCB has an SMK part number (2J-M9020-02B), and Apple's Technical Procedures refers to the switches as being SMK.<ref name="A2GSTP" /> The SMK version has double-shot moulded keycaps, which are slightly darker in colour than the Alps version.

The example below is from ca. 1988, while MouseFan's example is from 1987.

<gallery widths=250 heights=167>
File:Apple Desktop Bus keyboard SMK - some key caps removed.JPG                      | Some key caps removed
File:Apple Desktop Bus keyboard SMK - SMK switches exposed.JPG                       | SMK switches exposed
File:Apple Desktop Bus keyboard SMK - close up of locking SMK key switch on left.JPG | Close up of locking SMK key switch on left
File:Apple Desktop Bus keyboard SMK - keyboard controller.JPG                        | Keyboard controller, dated 8844
File:Apple Desktop Bus keyboard SMK - rear keyboard label.JPG                        | Rear label
File:Apple Desktop Bus keyboard SMK - keyboard assembly rear.JPG                     | Keyboard assembly rear
File:Apple Desktop Bus keyboard SMK - rear PCB.JPG                                   | Rear of PCB
File:Apple Desktop Bus keyboard - PCB markings.JPG                                   | PCB markings
</gallery>