Electric sit-to-stand desk riser's ergonomic workstation encourages productivity by supporting sit-stand work and accommodating up to three 27" monitors or two 34" monitors. Benefits of alternating between sitting and standing while working include reduced back pain and a boost in overall health and energy. Work space features four AC outlets, two conveniently placed USB-A 2.0 ports, a USB-C port and 10.5" slot to hold a tablet or mobile phone. Full-size fixed keyboard tray measures 31.8" wide x 11.8" deep and can support anything from a keyboard to a laptop. Electric standing desk converter supports up to 35 lb. and adjusts in height from 4.7" to 21.7" , allowing people of all heights to work from an ergonomic position. Desk converter silently adjusts height at the touch of a button. Grommet hole on the rear of the work space provides hassle-free cable/wire management. Desk riser and converter exterior seamlessly match with the same sleek finish. Minimal assembly is required.