Lenovo ThinkPad W550s i7-5500U @ 2.4Ghz 12Gb RAM 256Gb SSD 15.6" Windows 10 Pro. Hardware has been tested with Lenovo Vantage and all tests passed. See photo. Windows 10 Pro installed.  Laptop is used but fully functional. There may be minor scratches or scuffs but no physical damage (see photos). Power button is slightly indented but fully functional. Laptop has been thoroughly cleaned. Does not include charger/power adapter. Laptop will be shipped with battery charged.