HP Slate 21-s100 All-in-One - Manual (Page 9)

Rear components
Component Function
(1) SD card reader Reads data from and writes data to Secure Digital (SD)
memory cards
(2) USB 2.0 connector Connects external USB devices to the all-in-one
(3) Audio-out (headphone) jack Produces sound when connected to optional powered
stereo speakers, headphones, earbuds, or a headset
(4) DC power connector Connects the DC-in cable from the AC power adapter
(5) Ethernet connector Connects an Ethernet cable to the all-in-one
(6) USB 2.0 connector Connects external USB devices to the all-in-one
(7) USB 2.0 connector Connects external USB devices to the all-in-one
Rear components 3