Griffin Powermate USB-C for Sale in Irwindale, CA - OfferUp
Griffin Technology PowerMate Assignable USB Multimedia NA16029
Microsoft Surface Dial evokes comparison to Griffin PowerMate for Mac | AppleInsider
Using the Griffin PowerMate to Control Your Teleprompter - Suborbital Blog
Griffin PowerMate Multimedia Control Knob for USB Computers, Black - Assignable USB multimedia controller (9d17dd30e8444a57794f02ecaf6e3849) - PCPartPicker
Office Depot
Griffin PowerMate - Deskthority wiki
GRIFFIN POWERMATE usb PROGRAMMABLE CONTROLLER gold | eBay