EX-51 Information Sheet
The EX-51 mini-USB Y-cable is provided to feed USB bus power and to allow USB 2.0 connection from a host system. While the type A connector P1 provides both bus power and USB 2.0 high-speed signal wires, the type A connector P2 only provides bus power without signal wires. The USB PSU (power supply unit) can be connected to P2 if the host USB port Vbus current supply capability is limited.