Board connector assembly comprising a first connector and a second connector wherein a. the first connector comprises a housing holding at least one jack assembly, comprising an inner conductor and an outer conductor arranged coaxial to the inner conductor, wherein b. the second connector comprises a socket with at least one opening extending in an axial direction (z), said opening comprising a first contact surface, wherein c. the first contact surface in a mated position is electrically interconnected to an outer conductor of the jack assembly in a radial direction and wherein d. in axial direction (z) of the opening a second contact surface is arranged which in the mated position is electrically interconnected to the inner conductor of the first connector part in the axial direction (z) and wherein e. the inner conductor comprises a pin which is arranged displaceable in the axial direction (z) and in a bushing comprising contact fingers arranged in a circumferential direction around and in electrical contact with the pin, wherein the pin is arranged displaceable against the force of a spring, wherein the pin with the spring sitting on its back is inserted into the bushing and characterized in that f. the first connector comprises means to protect the at least one inner conductor, wherein the means to protect the inner conductor comprises a protective element in the form of a casing which is arranged displaceable with respect to the housing in the axial direction (z) of the first connector, wherein the casing can be moved between a first forward and a second rearward position, wherein in the forward position the casing is arranged around the pin protecting it from outside damage, wherein for mating with the second connector, the casing is slid from the forward into the rearward position. a. the first connector comprises a housing holding at least one jack assembly, comprising an inner conductor and an outer conductor arranged coaxial to the inner conductor, wherein b. the second connector comprises a socket with at least one opening extending in an axial direction (z), said opening comprising a first contact surface, wherein c. the first contact surface in a mated position is electrically interconnected to an outer conductor of the jack assembly in a radial direction and wherein d. in axial direction (z) of the opening a second contact surface is arranged which in the mated position is electrically interconnected to the inner conductor of the first connector part in the axial direction (z) and wherein e. the inner conductor comprises a pin which is arranged displaceable in the axial direction (z) and in a bushing comprising contact fingers arranged in a circumferential direction around and in electrical contact with the pin, wherein the pin is arranged displaceable against the force of a spring, wherein the pin with the spring sitting on its back is inserted into the bushing and characterized in that f. the first connector comprises means to protect the at least one inner conductor, wherein the means to protect the inner conductor comprises a protective element in the form of a casing which is arranged displaceable with respect to the housing in the axial direction (z) of the first connector, wherein the casing can be moved between a first forward and a second rearward position, wherein in the forward position the casing is arranged around the pin protecting it from outside damage, wherein for mating with the second connector, the casing is slid from the forward into the rearward position.