Where is the power button on my IdeaPad Flex 4?

[litig8r4u]

Just got a laptop, it's a Lenovo, ideapad Flex 4? Where is the power button?

 

[rgd1101]

Didn't come with a manual?
https/download.lenovo.com/consumer/mobiles_pub/ideapad_flex4_1470_1570_1435_1480_1580_ug_en_201606.pdf
page 13