Two USB 3.1 Gen 1 (one Always On) one USB 3.1 Type-C Gen 1 (with the function of Power Delivery and DisplayPort) one USB 3.1 Type-C Gen 2 / Thunderbolt 3 (with the function of PD and DP) HDMI 1.4b Ethernet extension connector combo slot of nano-SIM card (WWAN models) and microSD card reader headphone / microphone combo jack optional smart card reader side docking connector security keyhole |