A cable feeding unit (108) of a cable management system (100) comprising one or more feeding sections (200A, 200B, 200C, 200D, 302), having a body (202), a first side structure (208) and a second side structure (210), an inlet opening (212, 314) and an outlet opening (214) of a cable (124, 230, 410); one or more pairs of sheave rollers (216, 218, 220) attached between the first side structure and the second side structure; a cable feeding passage (222) formed at least between a rim part of the first sheave roller and a rim part of the second sheave roller of the one or more pairs of sheave rollers; one or more drives (160, 226A, 226B) connected to at least one of the sheave rollers; and one or more transmission mechanisms (224A, 224B) connecting the one or more drives with at least the first or second sheave roller.