Geekworm Raspberry Pi Cooling Fan Expansion Board X728A1 for X728 Raspberry Pi 4 Model B 3B 3B 2B

[Overview] This is a X728-A1 cooling fan expansion board which can used with your Raspberry Pi to cool down the Pi for better heat dissaption. [Key Features] X728-A1 Optional Raspberry Pi cooling fan Completely solve the overheating problem of your Raspberry Pi Efficient drop temp. of your Raspberry Pi by using the X728-A1 Stackable design allows you to connect both X728 and X728-A1 on your Raspberry Pi On-board XH2.54 power output connectors allow to power other devices Reserves the 40-pin header that can be stacked with other Raspberry Pi accessory boards Compatible for use with Raspberry Pi 4B/3B+/3B/2B/B+ [Packing List] X728-A1 Expansion Board x 1 Spacer M/F M2.5 *21mm x 4 Spacer F/F M2.5 *12mm x 4