A card edge connector (100) for receiving a module (200) includes an elongated insulative housing (1) having a receiving slot (19) for receiving the module and at least one arm portion (10) positioned at one end of the insulative housing. The arm portion (10) has a pair of side walls (11) and a recess (12) located therebetween. Each side wall has a stopper (14) extending in the recess. A sets of terminals (2) are mounted on said insulative housing and extend into the receiving slot thereof. A latch (3) is adapted to be rotatably received in the recess (12). The latch includes an ejecting portion (33) for ejecting the module out of the receiving slot, a locking portion (34) for locking the module into the receiving slot and a pair of projections (31) formed on opposite sides thereof for cooperating with the stoppers (14). The projection (31) has a side surface (312) coated with a lubricant film (315) thereon for interfering engagement with the stopper (14) when the latch is rotated inwardly.