Abstract: The table comprises a mounting with columns each comprised of a lower portion and of a telescopic upper portion. A cross-bar connects the upper portions. A height adjusting device acts on the upper telescopic portion which carries a plate for the keyboard and an independent height adjustable screen plate. Each plate has its own lower portions and upper portions and its own adjusting system. Each column has its own actuation handle arranged on the long side of the plate and comprising driving shafts for the height adjusting device of the keyboard plate and the screen plate. The driving shafts traverse the lower portion and the upper portion carrying the keyboard plate and the traversed upper portions are provided with oblong holdes for the driving shafts, of which the length corresponds at least to the adjusting travel. Such arrangement enables to house the driving shafts in an invisible manner and to support them in a simple way.