Gigabyte Multimedia Docking Station for S1081 Tablet (D1080) Audio: 4x Speakers (2 sets of dual channel speakers and 2 sets of 40mm woofer speakers) Optical Disk Drive: DVDRW Dual-Layer Drive I/O Ports: 3x USB 2.0 Ports, 1x VGA Port, 1x HDMI Port (not available for S1080), 1x RJ45 LAN Port, 1x Microphone-in, 1x Headphone-out Full PC Connectivity with I/O Ports Full PC Connectivity with I/O Ports Amazing Audio with 40 mm Subwoofer speakers Power Station for Extended Battery