Keyed input/output connector

1. A connector comprising:

a plug connector, the plug connector including a housing, a projection extending from the housing, and a paddle card mounted in the housing; and

a conductive cage into which the plug connector receptacle can be inserted, the cage having a mating end through which the plug connector is inserted and an opposite end, the cage including a cage housing and a cap,

the cage housing comprising a top wall, a bottom wall and side walls connecting the top and bottom walls together, the walls forming an inner area extending from the mating end of the cage,

the cap being on the top wall and comprising side walls extending upwardly from the top wall and an upper wall at ends of the side walls of the cap and spaced from the top wall, the side walls of the cap and the upper wall forming a keyway which is in communication with the inner area, the keyway extending from the mating end of the cage,

wherein the housing of the plug connector is received in the inner area of the cage and the projection of the plug connector is received in the keyway of the cage; and

a plurality of deflectable spring fingers extending from the top wall of the cage housing, a deflectable spring finger extending from each side wall of the cap and a deflectable spring finger extending from the upper wall of the cap.

2. The connector of claim 1 , wherein each spring finger is formed of spring tempered material.

3. The connector of claim 1 , wherein predetermined ones of the spring fingers on the top wall are connected together by a bridge.

4. The connector of claim 1 , wherein the spring fingers on the top wall and on the cap are connected together by a bridge.

5. The connector of claim 4 , wherein the spring fingers and bridge sections are formed separately from the cage and connected to the cage by the bridge.

6. The connector of claim 1 , further comprising a plurality of deflectable spring fingers extending from the side walls and bottom wall of the cage housing.

7. An assembly comprising:

a conductive cage into which a plug connector receptacle can be inserted, the cage having a mating end through which the plug connector is inserted and an opposite end, the cage including a cage housing and a cap,

the cage housing comprising a top wall, a bottom wall and side walls connecting the top and bottom walls together, the walls forming an inner area extending from the mating end of the cage, and

the cap being on the top wall and comprising side walls extending upwardly from the top wall and an upper wall at ends of the side walls of the cap and spaced from the top wall, the side walls of the cap and the upper wall forming a keyway which is in communication with the inner area, the keyway extending from the mating end of the cage;

a plurality of deflectable spring fingers extending from the top wall of the cage housing, a deflectable spring finger extending from each side wall of the cap and a deflectable spring finger extending from the upper wall of the cap; and

a conductive bezel having an aperture therethrough and a cutout in communication with the aperture, wherein the cage housing is inserted through the aperture of the bezel and the cap of the cage is inserted through the cutout of the bezel, and wherein the spring fingers on the cap engage and are compressed by edges of the aperture and cutout.

8. The assembly of claim 7 , wherein each spring finger is formed of spring tempered material.

9. The assembly of claim 7 , wherein predetermined ones of the spring fingers on the top wall are connected together by a bridge.

10. The assembly of claim 7 , wherein the spring fingers on the top wall and on the cap are connected together by a bridge.

11. The assembly of claim 10 , wherein the spring fingers and bridge sections are formed separately from the cage and connected to the cage by the bridge.

12. The assembly of claim 7 , further comprising a plurality of deflectable spring fingers extending from the side walls and bottom wall of the cage housing.

13. The assembly of claim 7 , wherein the cage housing has a plurality of the caps on the top wall, the caps being spaced apart from each other, and the bezel has a plurality of cutouts in communication with the aperture, wherein the cage housing is inserted through the aperture of the bezel and the caps of the cage are inserted through the respective cutouts of the bezel, and wherein the spring fingers on the cap engage and are compressed by edges of the aperture and cutouts.

14. The assembly of claim 13 , further comprising

a plurality of lower caps on the bottom wall of the cage housing, each lower cap comprising lower side walls extending downwardly from the bottom wall and a lower wall at ends of the lower side walls and spaced from the bottom wall, the lower side walls and the lower wall of each cap forming a keyway which is in communication with the inner area, the keyways extending from the mating end of the cage; and

a plurality of lower cutouts in the bezel in communication with the aperture, wherein the cage housing is inserted through the aperture of the bezel and the caps of the cage are inserted through the respective cutouts of the bezel, and wherein the spring fingers on the cap engage and are compressed by edges of the aperture and cutouts.

15. The assembly of claim 14 , wherein the cage housing further comprises inner walls forming separate bays within the cage housing, each bay being configured to receive a plug connector therein.

16. The assembly of claim 15 , wherein respective cutouts in the bezel align with respective bays in the cage housing when the cage is attached to the bezel.

17. A connector comprising:

a plug connector, the plug connector including a housing, a projection extending from the housing, and a paddle card mounted in the housing; and

a conductive cage into which the plug connector receptacle can be inserted, the cage having a mating end through which the plug connector is inserted and an opposite end, the cage including a cage housing and a cap, the mating end and the opposite end of the cage define a length of the cage, and wherein the cap extends along a portion of the length of the cage,

the cage housing comprising a top wall, a bottom wall and side walls connecting the top and bottom walls together, the walls forming an inner area extending from the mating end of the cage, and

the cap being on the top wall and comprising side walls extending upwardly from the top wall and an upper wall at ends of the side walls of the cap and spaced from the top wall, the side walls of the cap and the upper wall forming a keyway which is in communication with the inner area, the keyway is defined by a channel having three distinct sides, the keyway extending from the mating end of the cage,

wherein the cage housing of the plug connector is received in the inner area of the cage and the projection of the plug connector is received in the keyway of the cage and wherein a plurality of deflectable spring fingers extend from the top wall of the cage housing, at least one deflectable spring finger extends from each side walls of the cap and at least one deflectable spring finger extends from the upper wall of the cap.

18. The connector of claim 17 , wherein the cap is integrally formed with the cage housing.

19. The connector of claim 17 , wherein each spring finger is formed of spring tempered material.

20. The connector of claim 17 , wherein predetermined ones of the spring fingers on the top wall are connected together by a bridge.

21. The connector of claim 17 , wherein the spring fingers on the top wall and on the cap are connected together by a bridge.

22. The connector of claim 21 , wherein the spring fingers and bridge sections are formed separately from the cage and connected to the cage by the bridge.