Airflex5D Multi-Projector 2D/3D Stacking System with Linear Passive 3D/Stacking/Scaling/Warping, Built-In QStack Grid System AF5D-30SL Doubles the brightness when used in 2D/3D stacked dual projector configurations Affordable commercial-grade passive 3D for home theater environment and supports 1080P side-to-side & top-bottom 3D frame packing signals Single stacking processor that manages passive 3D, enhanced 2D projected images Input: HDMI (1), VGA (1), DVI (1), RS-232 (1) Output: HDMI (2), HDMI Loopout (1)