Surplus from Best Buy, probably a display unit in one of their stores. AC adapter will be Best Buy brand. Machine details from the Lenovo Site: Processor 1x 8th Generation Intel® Core™ i5-8250U Processor(Core i5-8250U) Memory 1x 8GB DDR4 2400 Operating System Google Chrome() Hard Drive 1x 128GB SSD Wireless Network 1x Intel Wireless 7265(2x2) AC with BT4.1 Ports 1x 2 Type C Full Feature (DP PD and USB); Audio Port; DC-in USB Type C; MicroSD Media Reader; 1 USB 3.0(Type A) Camera 1x 720P HD with Dual Array Microphone Graphics 1x Intel UHD 620 Monitor 15.6 1920x1080