Features: The maximum voltage of this product is 32 volts, and it is recommended to use it within 28 volts This module is a pure buck module and does not have a boost function. If you want to use a 20V output, you must use a DC power supply above 21V; The low voltage of the product can reach 6V, but most fast charging will not be activated at 6V; At PD output (PD20V, 5A), the output power can reach 100W. For low voltage and high current fast charging, please use the original data cable. If you want to measure charging voltage and current, you must use a low internal resistance USB meter Otherwise, it will affect the charging current OPPO and OnePlus phones require a USB port for charging QC4+/QC4.0/PD3.0 and other protocols must use TYPE_ Port C When USB port and TYPE_ When the C port is inserted simultaneously, both ports have 5V output High compatibility: Supports the following fast charging protocols: PD2.0 PD3.0 PPS Suitable for Qualcomm QC4+/QC3.0 Huawei SCP/FCP For OPPO VOOC Suitable for OnePlus DASH Applicable to application le 2.4A Representing Samsung AFC Suitable for VIVO 9V2A dual engine Applicable to MediaTek PE2.0 Packaging includes: 1 fast charging module The demonstration of other accessories in the picture is not included