Lenovo B590, a simple and durable design, with a 20V/3.25A power supply specification. - Model Name: B590 - Manufacturing Date: November 13, 2015 - Input Voltage: 20V - Input Current: 3.25A - Brand: Lenovo Thank you for viewing. Only the BIOS boots up, and the operating status of other functions is unknown. The internal SSD has been initialized (physically formatted). [Specifications] CPU: Celeron 1005M Memory: 4G SSD: 223GB (data erased) Monitor: No particular issues AC Adapter: Genuine product included OS: None (Win7 license sticker attached to the back)