Dock/ Headphone/microphone combo jack | Kensington security slotUSB Type-C ThunderboltSmartCard readerHeadphone/microphone combo jack | Buttons for volume up and downKeyboard base with TouchPadUSB Type-Cسیم کارت خورقلم لمسیHeadphone/microphone combo jack | USB Type-CSecurity lockHeadphone/microphone combo jack |