... USB hub ports (2.0) 3)height is adjustable(8.5cm, 26.5cm,40cm Height Adjustable Laptop Table Protable laptop table with ... fold and adjust2)4pcs USB hub ports (2.0)3)height is adjustable(8.5cm, 26.5cm,40cm)4)with cooling ... PATENT: ZL200620015846.3 ZL200630154659.9 PCT PATENT: PCT/CN2007/003208 Height Adjustable Laptop Table Height Adjustable Laptop Table Height Adjustable Laptop Table