... .Automatically up and down monitor4.Aluminum alloy material in surfaceFunction:1. Electric control, lifting comfortable, height-adjustable. 2. Flexibility ,stability , ... stainless steel panel, angle regulate automatically.5. Very easy operation for any to control all lifts UP/DOWN together by one ... 15", 17", 19", 22" LCD monitor or 14~21.5 All In One PC.Professional service:Pre-sale: Reply inquiry ...