It seems USB Cufflinks are a thing! https://www.amazon.com/s/?ie=UTF8&keywords=usb+cufflink&tag=googhydr-20&index=aps&hvadid=73415064373&hvpos=1t1&hvnetw=g&hvra

It seems USB Cufflinks are a thing! https://www.amazon.com/s/?ie=UTF8&keywords=usb+cufflink&tag=googhydr-20&index=aps&hvadid=73415064373&hvpos=1t1&hvnetw=g&hvrand=7731927148516397129&hvpone=&hvptwo=&hvqmt=e&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9010961&hvtargid=kwd-24771296108&ref=pd_sl_3w77pknhtq_e https://www.amazon.com/s/?ie=UTF8&keywords=usb+cufflink&tag=... My first thought was it was some sort of hybrid device such as the USB Rubber Ducky, like https://hakshop.myshopify.com/products/usb-rubber-ducky-deluxe https://hakshop.myshopify.com/products/usb-rubber-ducky-delu.... Learn something new every day.