Fingerprint sensor

Hello,

I bought this fingerprint sensor. It has AS608 QCCF TR6W18 chip on it, and it uses 6 wires to connect to arduino. I connected only four (TX, RX, 3V3 and GND) and it's working normally with adafruit library, but my question is what for are the last two wires labelled U+ and U-.

Thank you

biometric applications in many fields, khóa cửa thông minh Kingbel

Hello, Worly
How did you get this thing running?
I have 6 Pins too, but I can´t get it working.

@sneef2000 here is my solution:

I bought this.

I suspect U+ and U- are the data pins for the USB2.0 interface, could anyone confirm?
thanks

Worly:
Hello,

I bought this fingerprint sensor. It has AS608 QCCF TR6W18 chip on it, and it uses 6 wires to connect to arduino. I connected only four (TX, RX, 3V3 and GND) and it's working normally with adafruit library, but my question is what for are the last two wires labelled U+ and U-.

Thank you

my guess is:
the pins for USB2.0 interface pin 26(D+) and 26(D-), you can measure continuity from these pins to the connector pins, let me know if it is true