Dell Latitude 5500 15.6". 16GB DDR4 RAM (Dual-channel). Connectivity: Power Connector, USB 3.1 Gen2 (USB Type-C) connector w/DisplayPort/Thunderbolt (Optional), USB 3.1 Gen 1, Smart Card Reader (Optional), MicroSD Card Reader, Headset/Microphone Connector, USB 3.1 Gen1 Connector, USB 3.1 Gen1 Connector w/PowerShare, HDMI Connector, Gigabit Ethernet Jack, Wedge-Shaped Lock Slot.