This is a Lenovo monitor. I was using it normally until recently. It worked fine as far as I could tell. It has DP and VGA ports. A simple Lenovo display monitor. - Brand: Lenovo - Button placement: Control buttons on the bottom - Model information: Model information on the back Thank you for looking. Monitor Type: PC Monitor Size: 22-23.9 inches Resolution: Full HD Refresh Rate: ~60.9Hz Input Terminals: D-Sub Input Terminals: DisplayPort