The Centris Technology on the Raxxess QMP1L Laptop Shelf uses the center of gravity to balance the laptop, providing easy finger adjustments. Single arm design allows extension up to 20Ó (508 mm). Easily installed and ships fully assembled. The shelf features a clamp that allows the mount to be installed at any height on the music production center base. The Raxxess QMP1L Laptop Shelf is compatible for screens with VESA¨ 75 x 75 mm or 100 x 100 mm compliant mounting patterns.