Height adjustable desk system

A height adjustable desk comprising:

• a tabletop supported by a first telescoping column and a second telescoping column each having a telescopic adjustment mechanism disposed therein, the tabletop being configured to be adjustable in a height direction relative to a floor;
• a motor;
• and
• a drive shaft driven by the motor to operate the telescopic adjustment mechanisms, the drive shaft comprising:
• a first shaft segment engaged with the motor and the telescopic adjustment mechanism of the first telescoping column, the first shaft segment comprising a coupling sleeve having a coupling grove;
• and
• a second shaft segment arranged as an integral, elongated, non-telescopic rod having a proximal end, an opposing distal end, and an intervening length, the second shaft segment configured such that when the proximal end is slidingly received within the coupling groove, the distal end engages the telescopic adjustment mechanism of the second telescoping column.