Microphone/Headphone / DockUSB Type-C ThunderboltSecurity lock | Dock/ Headphone/microphone combo jackSim Card SlotUSB Type-C Thunderbolt | Headphone/microphone combo jackKensington security slotUSB Type-C ThunderboltSmartCard reader | Headphone/microphone combo jackKensington security slotUSB Type-C ThunderboltSD card reader |