SHOP All Products › Apantac OG-DA-4HD-II-RM openGear Rear Module Image 1 of 1 Apantac OG-DA-4HD-II-RM openGear Rear Module $73.00 openGear Rear Module for OG-DA-4HD-II-MB. Occupies 2 slots in the openGear frame. 1 x SDI input, 1 x SDI passive input loop and 4 x SDI output BNCs. Quantity: Add To Cart Added! openGear Rear Module for OG-DA-4HD-II-MB. Occupies 2 slots in the openGear frame. 1 x SDI input, 1 x SDI passive input loop and 4 x SDI output BNCs.