75-100 cm.
Desk socket height is set at 15 to 20 cm suitable. If it is a desktop computer host, then the height of 30 centimeters from the ground can be. If it is a desktop charging or desk lamp, then the height is 90 to 100 cm from the ground.
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If it is a children's study, the socket is set at 20 to 30 cm, mainly for children to see and write homework.
It's usually between 75 and 1 meter