Dock/ Headphone/microphone combo jackSim Card Slot | SD card readerHeadphone/microphone combo jackKensington security slotSim Card SlotUSB Type-C ThunderboltSmartCard reader | Headphone/microphone combo jackKensington security slotUSB Type-C ThunderboltSmartCard reader | Dock/ Headphone/microphone combo jackSim Card SlotUSB Type-C Thunderbolt |