According to one embodiment, in a memory system, a printed circuit board a first end portion and a second end portion. The second end portion is a portion arranged in an opposite side of the first end portion. Both of a semiconductor memory and a controller are disposed on the first surface. A edge connector is connectable to a host device and is disposed in the first end portion. Plural through-hole portions are disposed in the second end portion. Each of the plural through-hole portions penetrates from the first surface to the second surface. Each of the plural through-hole portions has an inner surface covered with an electrically-conductive film. Plural pad electrodes are disposed on the second surface in the second end portion. At least some of the plural through-hole portions are electrically connected to the controller. At least some of the plural pad electrodes are electrically connected to the controller.