The ornamental design for part of a cablesupportsystem, as shown and described.
2. Part of cable support system
FIG. 2.1 is a front perspective view looking up at a part of a cable support system according to the present disclosure.
FIG. 2.2 is a bottom view thereof.
FIG. 2.3 is a rear perspective view thereof, looking up at the part.
FIG. 2.4 is a top view thereof.
FIG. 2.5 is a side view thereof.
FIG. 2.7 is a front perspective view thereof, from the left side, looking down at the part.
FIG. 2.9 is a front perspective thereof, from the left side, looking down at the part.
The middle region of the part is shown broken away to indicate that the precise length of the part is not claimed. The appearance of any portion of the part between the two break lines forms no part of the claim.