Abstract: A card connector comprises a main body having a first card accommodating space and a first spring attachment member. An ejection mechanism includes a push block, an ejection bar, and a positioning block. The push block has a second spring attachment member and an abutment member. The abutment member extends into the first card accommodating space for engagement with a card. The positioning block has first and second guide grooves. The ejection bar has a first end attached to the push block and a second end positioned in the first or second guide groove. The second end is capable of following the first and second guide grooves to move the positioning block relative to the push block during insertion and ejection of the card. A spring extends between the first and spring attachment members and biases the push block during insertion and ejection of the card.