GPIOs on Dual Gigabit Ethernet Carrier Board

I am using Dual Gigabit Ethernet Carrier Board for Raspberry Pi CM4. I am using i2c , SPI (fp7 connector) and two ethernets ports only.
I need 3 of GPIO’s but found that none exits. Can I use any pins coming to connector?

In above configuration (Two Ethernets, i2c and SPI) do i need use fan for cooling?

Hello, the Dual Gigabit Ethernet Carrier Boards are not designed for GPIO pinout as it is not designed for GPIO development. Regarding whether you need to connect a fan or not, you can choose according to the actual situation. Here is the working temperature of the mini router, you can refer to it. If you decide that the temperature is high, you can add a fan yourself.