These Mac Books have been tested and in very good working conditions, they all come with power adapters. Below is their serial numbers as well as circle count.<div>1. C02T9285G8WN - CC - 255</div><div>2. C02R486EG8WP - CC- 181</div><div>3. C02TD53JG8WN - CC- 439</div><div>4. C02TNB1TGWN - CC - 127</div>