This is Yamaha Tenere 700 fixture for mounting of custom holder for tablet, phone or navigation. Custom holder can be fastened with six M5 screws. Holes layout is on the attached picture. Fixture also serves as anti wobble support for LCD screen. I've printed a prototype with Creality CR-20 Pro with PETG filament which is strong enough for a heavy tablet (610 g) like Crosscall Core-T4 + aluminum holder.