Locking plug for power adapter

A power adapter system comprising:

• a power adapter comprising:
• an enclosure;
• and
• a tab extending from the enclosure, the tab comprising a head and a shaft;
• and
• a plug comprising:
• an enclosure having a slot to accept the head and shaft of the tab of the power adapter;
• and
• a spring assembly positioned in the slot, wherein the spring assembly comprises:
• a first spring having a first arm and a second arm, the first arm having a first protrusion and the second arm having a second protrusion, wherein the first protrusion and the second protrusion form a retention area where the tab of the power adapter is retained in the retention area when the power adapter and plug are mated, and wherein the first protrusion is a widened and reinforced portion of the first arm and the second protrusion is a widened and reinforced portion of the second arm.

A power adapter system comprising:

• a power adapter comprising:
• an enclosure;
• a tab extending from the enclosure, the tab comprising a head and a shaft, the shaft fixed to the enclosure, wherein the shaft comprises:
• a plunger fixed to the head, wherein the plunger and the head are movable with respect to the shaft;
• and
• a spring between the shaft and the plunger;
• and
• a plug comprising:
• an enclosure having a slot to accept the head and shaft of the tab of the power adapter.