I found this Genovation ControlPad CP24 at a thrift store for $7. It's got Cherry Black switches and I'm waiting for a cable to see if it works. So far I know
Genovation Cp24-usbhid ControlPad 24key USB HID 6ft for sale online | eBay
Genovation ControlPad CP24 USB HID - Day Trading Hardware, Software and Tools - Bear Bull Traders Forums
Genovation Computer Input Devices
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Amazon.com: Genovation ControlPad CP24 USB HID : Electronics
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