Abstract: The invention relates to a yarn processing system S with a textile machine T, a carrying device P, comprising a round cross-section or square cross-section clamping profile 1 and at least one yarn feeding device F, fixed to the clamping profile, which yarn feeding device fixation has a cut-out 5 and at least one detachable clamping element 7 for mounting on the clamping profile, wherein the cut-out of the fixation B of the yarn feeding device F is either selectively changeable between a round configuration and a square configuration or is embodied to be suitable for both cross-sections.

Abstract: The switch (15) which is placed at a feeding device (F) for access from the exterior is situated in a front part (10) of a housing (1) at a side of a withdrawal axis (Y) which is remote from a mounting device (5). The housing (1) has the mounting device (5), a housing bracket (6), the cantilevering front part (10) at the housing bracket, a withdrawal axis (Y) defining withdrawal eyelet (13) which is placed in the front part, and a light permeable cover (14).