A socket suitable for receiving a board therein, comprising: a housing including a first side plate and a second side plate parallel to the first side plate; the first side plate and the second side plate together defining an elongated slot therebetween for reception of the board; a first latch including a first axle, a first body and a first fastening portion; the first axle pivotably coupled to the housing at one end of the slot; the first body having one end joined to the first axle and the other end to the first fastening portion; the first fastening portion constructed for engagement with the board; and a second latch including a second axle, a second body and a second fastening portion; the second latch pivotably coupled to the housing at the other end of the slot; the second body having one end joined to the second axle and the other end to the second fastening portion; the second fastening portion constructed for engagement with the board; wherein the lateral width of the first body of the first latch in a direction along the width of the first side plate is half of that of the first axle in the same direction, and the lateral width of the second body of the second latch in the direction along the width of the second side plate is half of that of the second axle in the same direction; wherein the socket is characterized in that the first fastening portion of the first latch is a protrusion extending from the first body along the width direction of the first body, and the second fastening portion of the second latch is a protrusion extending from the second body along the width direction of the second body; wherein the length of the first fastening portion is longer than the width of the first body, and the length of the second fastening portion is longer than the widths of the second body. a housing including a first side plate and a second side plate parallel to the first side plate; the first side plate and the second side plate together defining an elongated slot therebetween for reception of the board; a first latch including a first axle, a first body and a first fastening portion; the first axle pivotably coupled to the housing at one end of the slot; the first body having one end joined to the first axle and the other end to the first fastening portion; the first fastening portion constructed for engagement with the board; and a second latch including a second axle, a second body and a second fastening portion; the second latch pivotably coupled to the housing at the other end of the slot; the second body having one end joined to the second axle and the other end to the second fastening portion; the second fastening portion constructed for engagement with the board; wherein the lateral width of the first body of the first latch in a direction along the width of the first side plate is half of that of the first axle in the same direction, and the lateral width of the second body of the second latch in the direction along the width of the second side plate is half of that of the second axle in the same direction; wherein the socket is characterized in that the first fastening portion of the first latch is a protrusion extending from the first body along the width direction of the first body, and the second fastening portion of the second latch is a protrusion extending from the second body along the width direction of the second body; wherein the length of the first fastening portion is longer than the width of the first body, and the length of the second fastening portion is longer than the widths of the second body.