All Atari VCS units currently ship to backers with US power cords (NEMA 5-15 grounded Type B). The power brick is dual currency and will work in any location. You will not need to use a transformer. If you live in a market that uses a different plug type, you need to either use a travel adaptor or purchase a new power cable. The power cable you need is a c5, which has a "Mickey Mouse" or cloverleaf connector (see below).