HP 903660-001 - Motherboard (system board) - Includes Windows 10, a Snapdragon 820 quad-core processor, 4GB, 64GeMMC, audio board, and thermal pads (North America) Retail
HP 908839-001 - Rear cover (Gold color) - Pre-assembled and IP tested - Includes audio-out (headphone) audio-in (microphone) combo jack for headset, USB port, NFC module, rear charging, heat spreader, lens adhesive, and WWAN/WLAN (Rest of World) Retail
HP 908838-001 - Rear cover (Gold color) - Pre-assembled and IP tested - Includes audio-out (headphone) audio-in (microphone) combo jack for headset jack, USB port, NFC module, rear charging, heat spreader, lens adhesive, and WWAN/WLAN (North America) Retail
HP 904364-001 - Rear cover - Pre-assembled and IP tested - Includes audio-out (headphone) audio-in (microphone) combo jack for headset, USB port, NFC module, rear charging, heat spreader, lens adhesive, and WWAN/WLAN (Rest of World) Retail