Thanks PapabravoUSB has 4 pins, 2 Power pins and 2 Data pins. RJ45 has 8 pins, usually 4 twisted pairs. You don't need any circuitry, just connect the pins the way you want. Now you have USB on RJ45 for what purpose?
I hope you were not asking for a USB to Ethernet conversion, that would be a much taller order.
http://www.dx.com/p/usb-cable-via-rj45-extender-set-pair-123484#.VEfRnqR0yM8- Color: Black
- Plastic case material
- Allows you to connect your USB device to your computer at a distance of up to 50m with the help of RJ45 cable
- No external power needed
- USB 2.0/1.1 compatible
- Hot swappable
good luck. I'm out of this thread.I need it to connect the internet dongle to laptop using cat5e
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