Nucleo-L432KC

Pins

L432KC doesn't have any Ethernet or WiFi connection. Only serial.

Hardware PWM Pins:

PA0 - A0 (Tim2Ch1)
PA1 - A1 (Tim2Ch2)
PA2 - A7 (Tim2Ch3)
PA3 - A2 (Tim15Ch2)
PA11 - D10 (Tim1Ch4)

Software pins (they work pretty good, at least at 200Hz)

PA4 - A3
PA5 - A4
PA6 - A5
PA7 - A6
PA8 - D9
PA12 - D2
PB0 - D3
PB1 - D6
PB5 - D11
PB6 - D5
PB7 - D4

Not sure:

PB3 - D13
PB4 - D12

All the hardware PWM pins could be used as software ones (but, in my opinion, it makes no sense).

PA9 - D1 and PA10 - D0 should be reserved for serial communication.