Dock/ Headphone/microphone combo jackSim Card SlotUSB Type-C Thunderbolt | SmartCard readerSD card readerHeadphone/microphone combo jackKensington security slotSim Card SlotUSB Type-C Thunderbolt | Microphone/Headphone / DockSim Card SlotUSB Type-C | Microphone/Headphone / DockSim Card SlotUSB Type-C |