The PD3.1 protocol supports a maximum fast charging output of 140w, that is, the maximum output parameter is 28V5A. The recommended power supply voltage of the PD3.1 unidirectional buck-boost module is 12-32v. This module has the function of automatically increasing and decreasing the voltage. When inputting 12v, it can also output 28v5a. When inputting 32v, it can also and output 28v5a. Suitable for with the voltage is not very fixed. The main control uses TI's LM5175+IP2736 chip. The performance is stable after long-term testing. note: Depending on the batch, the appearance/color/batch number of components may be different, which does not affect use. Material: PCB+components colour & style: C-purple+silver, 1-with Aluminum shell Package Contents: 1 x Fast Charging Module with Aluminum shell Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.