Undermount brackets can be used for under a table, on a wall or above mounting any 1/2 RU devices. Works with: EasyUSB Mixer/Amp, EasyUSB AudioBridge, OneLINK HDMI, TRIO MIC I/O, PRO MIC I/O and Quick-Connect USB. Contains two (2) black powder coated ears which can be mounted on either side of a 1/2 RU chassis for stable and discreet mounting.