the long wait is over - new Radeon RX Vega M graphics driver for NUC8i7HNK and NUC8i7HVK released today! : r/intel
Solved - Win 8 AMD Switchable Graphics FAQ | Page 3 | Windows 8 Help Forums
Amazon.com: Valley Of The Sun Original Laptop Graphics Card GPU Replacement, for HP EliteBook 8540W 8560W 8560P 8570W Mobile Workstation, for AMD Radeon HD 6770M GDDR5 1GB, MXM VGA Video Board Repair