laptop desktop stands (U2 )

name:laptop desktop stands  (ROHS,CE certification)  (7 USB 2.0 HUB)                                                                                                                 coulor:gray white match black,gray white, material :ABS  1.six gears adjustable setting position .                   2.compatibal with most notebook PC .                     3.Provides a more comfortable typing position .                  4. Improves overall posture .                                5.separable modules extend other supplement functions.                                                                              6.Brings the screen within proper viewing range.                       7.Relieves back ,neck, and eye strain.                                                                                                                                                                              8.specification:  Height Adjustable Laptop Stand Places laptop in a comfortable position.Stabilizing front edge prevents sliding while adjustable tilt customizes your viewing angle.Adjusts from 4-1/2 to 6-1/2 above desktop .Nonskid rubber feet.SmartStand improves ergonomics for laptop users-instant.
  The goal of ergonomics is to reduce or eliminate physical stress on the human body.When humans experience excessive amounts of repetitive stress,injury or disorder-such as carpal tunnel syndrome,back pain,and tendonitis-can occur.For instance,Degenerative Joint Disease in the cervical vertebrace (neck) can develop within three years ,affecting anyone who uses a laptop .Proper ergonomics lower health  risks.