I claim the ornamental design for a computer support, as shown and described.
FIG. 1 is a top front right perspective view of my new design;
FIG. 2 is a top rear left perspective view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is a left side view thereof; and,
FIG. 6 is a top cross section view taken at line 6-6 in FIG. 5.
The views of the computer support not shown form no part of the claimed design. The dash-dash lines in the figures show unclaimed features and unclaimed environmental elements. The dash-dot lines represent unclaimed boundaries of the claimed design. The use of a separation and a bracket are included to disclaim the particular length of the bracketed element.