Printed circuit board and storage device including the same

A storage device comprising:

• a printed circuit board;
• at least one semiconductor package on the printed circuit board, and including a plurality of nonvolatile memory chips;
• and
• a memory controller on the printed circuit board and configured to perform a write and read operation on the at least one semiconductor package,
• wherein the printed circuit board, in which a plurality of copper clad laminates (CCLs) are laminated vertically from an uppermost circuit layer to a lowermost circuit layer, includes,
• mislamination identifying portions in a non-destructive testing area, the mislamination identifying portions being in the CCLs, respectively,
• through-via holes vertically exposing the mislamination identifying portions, respectively, in the non-destructive testing area, the through-via holes being spaced apart from each other by a first interval, and
• a probe via extending vertically and being in contact with an end portion of each of the mislamination identifying portions on a same side, and
• wherein, from the uppermost circuit layer to the lowermost circuit layer, lengths of the mislamination identifying portions gradually increase in a horizontal direction and a number of copper foil removed areas of the mislamination identifying portions gradually increases.