The present invention relates to a system for plugging a fibre optic cable into a fibre optic receptacle which comprises: a base element having at least one base port, and an adapter unit having at least one adapter, said at least one adapter and said at least one base port being spaced of a predetermined length. The system comprises a cable adaptor associated to the fibre optic cable, the cable adaptor comprising: a connector for being plugged into said adapter; an anchoring device for anchoring said fibre optic cable to said base port, and a connector retaining element for receiving the connector and a cable end portion, the connector retaining element defining said predetermined length and removably engaging with the anchoring device. The present invention further relates to a cable adaptor for a fibre optic cable and to a method of installing a fibre optic cable into a fibre optic receptacle, especially into a joint closure.