Microphone/Headphone / DockSim Card SlotUSB Type-C | Microphone/Headphone / DockUSB Type-C ThunderboltSecurity lock | SD card readerHeadphone/microphone combo jackKensington security slotUSB Type-C Thunderbolt | SmartCard readerHeadphone/microphone combo jackKensington security slotUSB Type-C Thunderbolt |