https://support.lenovo.com/za/en/downloads/ds038189-intel-n7260-bluetooth-firmware-for-windows-81-64-bit-thinkcentre-m93z-e93-m83-m93-m93p-m78
Intel N7260 Bluetooth Firmware for Windows 8.1 (64-bit) - ThinkCentre M93z, E93, M83, M93, M93p,...
Intel N7260 Bluetooth Firmware for Windows 8.1 (64-bit) - M93z, E93, M83, M93, M93p, M78