Electrical connector having a locking device

An electric connector for inserting an expansion card, comprising:

• an insulating body, having a plurality of terminal containing holes thereon;
• at least one electrically conductive terminal, being received in said terminal containing holes;
• and
• at least one locking device, disposed on at least one end portion and capable of rotating around said insulating body, and said locking device is a bent rod, wherein said end portion of said insulating body further comprises an axle hole for pivotally connecting said locking device, wherein said locking device further comprises a base portion, a latching portion, and a pivotal connecting portion, wherein said latching portion is disposed at an end of said base portion, and said pivotal connecting portion is disposed at another end of said base portion for pivotally connecting said axle hole, wherein said base portion comprises two vertical rods, and said pivotal connecting portion is formed by being extended horizontally inward from an end of each of said vertical rod, and said latching portion is coupled with said one vertical rod and disposed horizontally, and said latching portion further comprises an operating portion and one end of said operating portion is coupled with said latching portion and another end is coupled to said other vertical rod, said one vertical rod being longer than said other vertical rod, said operating portion protruding outwards from said other vertical rod.