A connection assembly comprising a withdrawable connector and a fixing foot configured to cooperate with the withdrawable connector in two mounting positions, the withdrawable connector comprising: an insulating body having two connector cooperation areas, each being configured to cooperate, in a corresponding mounting position, with the fixing foot configured to be fixed to a support, the two connector cooperation areas being located on two opposite faces of the insulating body, said insulating body extending in a first extension direction from the connector cooperation area; a conductive bar disposed in the insulating body, a connection socket arranged to cooperate with an external socket; said connection socket being configured to electrically connect the external socket to the conductive bar when the external socket cooperates with the connection socket; and wherein the connection socket is arranged for the external socket to cooperate with said connection socket by a relative movement in an insertion direction transverse to the first extension direction; wherein the withdrawable connector comprises a retaining finger configured to interface with an external finger of the external socket in a retained position, said retaining finger extending substantially in the insertion direction, the fixing foot comprising: a fixing portion configured to be fixed to the support; and a body having a foot cooperation area configured to cooperate with the withdrawable connector, said body extending in a second extension direction from the fixing portion, wherein the fixing foot comprises a recess extending along a recess direction transverse to the second extension direction. the withdrawable connector comprising: an insulating body having two connector cooperation areas, each being configured to cooperate, in a corresponding mounting position, with the fixing foot configured to be fixed to a support, the two connector cooperation areas being located on two opposite faces of the insulating body, said insulating body extending in a first extension direction from the connector cooperation area; a conductive bar disposed in the insulating body, a connection socket arranged to cooperate with an external socket; said connection socket being configured to electrically connect the external socket to the conductive bar when the external socket cooperates with the connection socket; and wherein the connection socket is arranged for the external socket to cooperate with said connection socket by a relative movement in an insertion direction transverse to the first extension direction; wherein the withdrawable connector comprises a retaining finger configured to interface with an external finger of the external socket in a retained position, said retaining finger extending substantially in the insertion direction, an insulating body having two connector cooperation areas, each being configured to cooperate, in a corresponding mounting position, with the fixing foot configured to be fixed to a support, the two connector cooperation areas being located on two opposite faces of the insulating body, said insulating body extending in a first extension direction from the connector cooperation area; a conductive bar disposed in the insulating body, a connection socket arranged to cooperate with an external socket; said connection socket being configured to electrically connect the external socket to the conductive bar when the external socket cooperates with the connection socket; and wherein the connection socket is arranged for the external socket to cooperate with said connection socket by a relative movement in an insertion direction transverse to the first extension direction; wherein the withdrawable connector comprises a retaining finger configured to interface with an external finger of the external socket in a retained position, said retaining finger extending substantially in the insertion direction, the fixing foot comprising: a fixing portion configured to be fixed to the support; and a body having a foot cooperation area configured to cooperate with the withdrawable connector, said body extending in a second extension direction from the fixing portion, a fixing portion configured to be fixed to the support; and a body having a foot cooperation area configured to cooperate with the withdrawable connector, said body extending in a second extension direction from the fixing portion,