This product is either discontinued or we cannot get that from suppliers.
Gigabyte GP-P850GM 850W 80+ Gold Fully Modular Power Supply, Fully Modular Design, 80 PLUS Gold Certification, Intel FF ATX 12V v2.31, PFC Active PFC (>0.9 Typical), Input Voltage 100-240 Vac (Full Range), Input Current 12-6A, Fan 120mm Smart Hydraulic Bearing, MTBF >100,000 Hours, Protection OVP/OPP/SCP/UVP/OCP/OTP, Output Capacity 850W.
All the black flat cables are modular design. Installing only the cables you need to reduce clutter, to increase the airflow and to improve the chassis thermal performance.