The motor probably drives a linkage of some kind, and this is probably only present on one foot. But I advise against single-engine frames in principle. If the frame is operated with only one motor, that is not optimal and there are also weight restrictions. A decent table top can weigh 20 kg or more.
I would take this underframe, it makes a much more solid impression, there are two motors in it, it fits better:
equip ERGO electric sit-stand table frame double motor (100cm)