This Standard Rolltop (STDRT-II) has been customized to use the "kneewell" area as a second, rolltop-secured storage compartment! Also a slight modification to the normal RBSTD-II Caster RollBase. On this version, removable panels on both the 10RU rack and the compartment are offset from the desk's rear. A Modesty Panel (MODSTD) could be used to create a second compartment all across the back if needed.