Apple Desktop Bus Keyboard
|Model no.||A9M0330 (except older Alps version)|
|Part number||658-4081 (older Alps version)|
BCG5ARA9M0330 (newer Alps version)|
BCG47FA9M0330 (SMK version)
|Manufacturer||Alps Electric, SMK|
|Keyswitches||SMK Alps mount, Alps SKCM Orange, Alps SKCM Salmon|
|Interface||Apple Desktop Bus|
|Years of production||1986–1992|
The Apple Desktop Bus Keyboard was sold with the Apple IIGS computer; as such, it is often referred to as the Apple IIGS Keyboard.
The Apple IIGS and its keyboard were the first Apple products to have:
- Apple Desktop Bus, including an extra port for a daisy-chained connection to the Apple Desktop Bus Mouse
- Power button on the keyboard
- "Platinum" design
Made in Japan. Alps SKCM Orange and Salmon switches. Caps lock is Alps SKCL Lock; in one orange Alps version, this switch is cream. 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. 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. 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.
This is likely the earlier version from Alps, with a simple rear label and orange Alps switches.
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.
Made in Taiwan, with white tactile SMK Alps mount switches. The PCB inscriptions are an exact match for the SMK-made Apple M0110A; along with what are believed to be SMK switches, there is a strong implication that this is an SMK-made keyboard. SMK also made a variant of the Apple Keyboard II.
The SMK version has double-shot moulded keycaps, which are slightly darker in colour than the Alps version.