Steinberg Systems SBS-EC-20S Manual De Instrucciones página 41

⑨ - Power adapter input.
Can be used as the auxiliary power supply or for charging the battery.
⑪ - Keyboard input
⑩ - POWER：Power switch.
QWERTY keyboard to input characters superposing on the real-time
monitoring images ,showing three lines of characters below the display line.
DISPLAY
① - VIDEO button
② - MENU showing button
③ - DOWN button
④ - UP button
⑤ - SEL - select button
⑥ - LED - probe illumination ON/OFF button
⑦ - REM remote control signal indicator
⑧ - POWER button