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Author Topic: Help needed for the SUM 1200 keyboard interface  (Read 628 times)

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Offline danbeaverTopic starter

Help needed for the SUM 1200 keyboard interface
« on: August 31, 2022, 06:20:41 PM »
I bought 2 of these (by https://retro.7-bit.pl/) to use external USB keyboards with case-based 1200s and none of the 6 keyboards I have tested work (4 are made by Rii -- mechanical Blue switches, one is an unbranded from the CheckMate A1500 website, and one is an old Dell).

None work, even after flashing the only firmware update on the retro.7-bit.pl web site.

The company has no listed working keyboards, nor will provide me with any such list; they say the keyboards I am using draw too much power (?).

Does anyone have a working keyboard connected to a SUM 1200 device they can suggest?