Connection module for a portable electronic device

1. A connection module for a portable electronic device, the connection module comprising:

a mating structure configured to attach to a mating structure interface of the portable electronic device, wherein the mating structure comprises:

a fixed alignment projection disposed on a first end of the mating structure;

a retractable alignment projection disposed on a second end of the mating structure; and

a retractable electrical connector disposed between the fixed alignment projection and the retractable alignment projection, wherein the retractable electrical connector and the retractable alignment projection are fixed relative to each other and movable relative to the fixed alignment projection.

2. The connection module of claim 1 , wherein the retractable electrical connector comprises spring pins.

3. The connection module of claim 1 , wherein the fixed and retractable alignment projections are disposed on opposite ends of the portable electronic device when the connection module is attached to the portable electronic device, thereby preventing movement of the portable electronic device relative to the retractable electrical connector.

4. The connection module of claim 1 , wherein the mating structure comprises a partially cylindrical structure disposed between the fixed alignment projection and the retractable alignment projection.

5. The connection module of claim 4 , wherein when the connection module is attached to the portable electronic device:

the partially cylindrical structure is disposed within a cylindrical groove of the portable electronic device to prevent movement of the portable electronic device relative to the connection module in at least two dimensions, and

the first and second alignment projections are disposed on opposite ends of the cylindrical groove to prevent movement of the portable electronic device relative to the connection module in a third dimension different from the at least two dimensions.

6. The connection module of claim 1 , wherein the mating structure comprises two partially cylindrical structures disposed between the fixed alignment projection and the retractable alignment projection and separated from each other by a gap.

7. The connection module of claim 6 , wherein the retractable electrical connector extends through the gap between the two partially cylindrical structures when the retractable electrical connector is in an extended position.

8. The connection module of claim 1 , wherein the connection module comprises an external housing, and wherein the mating structure is disposed on a front surface of the external housing.

9. The connection module of claim 8 , wherein the front surface comprises at least two apertures through which the retractable alignment projection and the retractable electrical connector are configured to move.

10. The connection module of claim 8 , further comprising

an aperture disposed in the external housing; and

a button slidable with respect to the external housing and accessible through the aperture.

11. The connection module of claim 10 , wherein the button is configured to slide within the aperture to move the retractable alignment projection and the retractable electrical connector between a retracted position and an extended position.

12. The connection module of claim 8 , further comprising:

a first retraction magnet fixed relative to the external housing; and

a second retraction magnet fixed relative to the retractable alignment projection and the retractable electrical connector,

wherein the first and second retraction magnets are configured to hold the retractable alignment projection and the retractable electrical connector in a retracted position or an extended position.

13. A method of connecting a connection module to a portable electronic device, the method comprising:

sliding a mating structure of connection module into a mating structure interface of the portable electronic device until a first alignment projection of the mating structure abuts the portable electronic device;

electrically connecting an electrical connector of the connection module to contact pads of the portable electronic device by moving the electrical connector from a retracted position to an extended position; and

locking the portable electronic device in position relative to the connection module by a second alignment projection that abuts the portable electronic device opposite the first alignment projection.

14. The method of claim 13 , wherein the second alignment projection locks the portable electronic device in position by moving from the retracted position to the extended position after the mating structure of the connection module is slid into the mating structure interface of the portable electronic device.

15. The method of claim 13 , further comprising:

moving the electrical connector to the retracted position; and

sliding the mating structure out of the mating structure interface.

16. The method of claim 13 , wherein moving the electrical connector from the retracted position to the inserted position comprises sliding a button fixed relative to the electrical connector along a track disposed in an external housing of the connection module.

17. The method of claim 13 , wherein moving the electrical connector from the retracted position to the inserted position moves spring pins of the electrical connector and the second alignment projection from within an external housing of the connection module to extend out of the external housing of the connection module.

18. The method of claim 13 , wherein a direction of sliding the mating structure into the mating structure interface is perpendicular to a direction of a transition between the retracted position and the extended position.

19. The method of claim 13 , further comprising obtaining diagnostic information from components of the portable electronic device through the electrical connector.

20. The method of claim 13 , further comprising writing data to components of the portable electronic device through the electrical connector.