Dock/ Headphone/microphone combo jack | Headphone/microphone combo jackButtons for volume up and downKeyboard base with TouchPadUSB Type-Cسیم کارت خورقلم لمسی | Headphone/microphone combo jackKensington security slotUSB Type-C ThunderboltSD card reader | Headphone/microphone combo jackKensington security slotUSB Type-C ThunderboltSD card reader |