What is the difference between a corner desk and a U-shaped desk?

Corner desk: two wings from the corner, user at center (two-surface configuration). U-desk: corner desk plus a back surface, user surrounded on three sides (three-surface). U-desks require 12'+ × 12'+ rooms. At OfficeFurniture2go.com, we configure both corner and U-shape setups — call 1-800-460-0858.