1, The module can support Raspberry Pi A+ 3A+ B+ 2B 3B 3B+ 4B (of course, Zero and Zero-W can also be supported, but only two screw holes can be fixed).
2, Support RPi I/O 26 ports 3.3V to 5V bidirectional logic level conversion(input or output). But not include ID_SC and ID_SD ports(since ID_SC and ID_SD are used to identify HAT modules, these two ports are not connected to the 5V interface).
3, If you short blue terminal block, Raspberry Pi 5V will connect to external 5V. You can use an external 5V to power the Raspberry Pi, of course, you can also power external devices from the Raspberry Pi. Two LEDs are used to indicate the Raspberry Pi 5V and external 5V.
4, Package included: 1x  voltage-level shifter module, 4x M2.5x16mm nylon standoffs, 4x M2.5x6mm nylon standoffs, 4x M2.5 nylon nuts. NOTE: the item not include Raspberry Pi module.