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. C02SW44RFVH4 -&nbsp; CC-310</div><div>2. C02QW25DFVH8 - CC-342</div><div>3. C02SN0DBFVH4 -&nbsp; CC-415</div><div>4. C02QW22ZFVH8 -&nbsp; CC-667</div>