Vu + solo 2 new cable tuner needed

Hi all can some tell me how to change tuner in this box to cable please ( or tell me where to find a guide how to ) i understand i cant just put a cable tuner in its got to be a usb tuner dont know if this is correct would appreciate any help and advice please thank you mial

thanks for info and reply any help where to find guide to set up box in cable i know how to in sat or is it the same way as sat once tuner installed thanks mial