Plug connector module having a detachable floating connector assembly

A plug connector module comprising:

• a first electrical connector assembly including a first outer shell and a first mating member received in the first outer shell being mated with a first mating connector;
• and
• a second electrical connector assembly including a second outer shell and a second mating member received in the second outer shell for being mated with a second mating connector;
• wherein
• the first outer shell is detachably attached to the second outer shell in two steps, of which a first step is to have the first outer shell and the second outer shell moved relatively toward each other in a transverse direction until a locating post on one of the first outer shell and the second outer shell received within a locating hole formed in the other of the first outer shell and the second outer shell, and a second step is to have the first outer shell and the second outer shell moved relatively along a front-to-back direction perpendicular to the transverse direction until the locating post can not leave the locating hole in the transverse direction.