[feature x735 v3.0] 1. The DC connector is changed from DC5525 to DC5521, which supports DC 6v-30v input (DC port only). 2. You can still use 5v psu via type-c or micro-usb port. 3. Remove the locking switch connector and replace it with an xh2.54 5v connector; the locking switch is no longer supported. 4. Use the fs fan jumper instead of the L-SW jumper to control the pwm fan; (some users cannot make the pwm fan work through the python code, or the python code does not support some operating systems, in this case, please remove fs jumper the fan to run the fan at full speed) 5. The x735 is an all-in-one expansion card for all current models for Raspberry Pi that use a 40-pin header. It provides smart and safe power management, safe shutdown and complete power down through software, and a silent 4p pwm fan that allows you to use for Raspberry Pi in different conditions. 6. The x735 also retains a 40-pin header that can be stacked with other accessory boards for Raspberry Pi for enhanced applications. 7. At the same time, the x735 reserves a 4pin power switch port (momentary switch), which can be connected to an external power switch to safely control the power on/off color:Black Material:PCB+Metal Package Contents: 1 x X735 V3.0 power management expansion board 1 x screw kit 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.