Questions and Answers

What does the USB socket on the rear of R4 Mk3 do?

This answer applies to R4 Mk3

The USB socket on the rear of R4 serves as a USB playback port, so you can load a USB memory stick or portable hard-drive with music to provide hours of uninterrupted listening. It also acts as a charge port so users can conveniently charge most Android and Apple phones.


Did this answer your question?

If not, please do not hesitate to contact us directly on +44 (0)1702 601410 or by using the enquiry form on our contact page.