Dual-arm mount lets you position two monitors just where you need them along with USB ports for charging & connecting electronic devices. Gas spring counterbalance arms fully rotate & adjust. Dual-arm monitor mount accommodates two monitors or one monitor & laptop with included tray. Mount to the desktop by directly screwing into the desktop or by clamping to the back edge of the desktop. All hardware is included for both mounting configurations. Mount is compatible with flat screen monitors up to 27".