Powered by Second Generation Embedded R-Series APU with Radeon™ HD 9000 graphics, 269 x 193 x 29.5 mm SI-304 provides 4 HDMI outputs and supports up to 4,096 x 2,160, 4K resolution for every display channel. Capabilities suit 2 x 2 video walls as well as menu boards and electronic displays that convey dynamic information and targeted promotions. I/O connectivity and expansion options are standard, and segregated ventilation keeps contaminants out while also enhancing system stability.