This computer works. It is outdated. It's a bit slow.
It probably has some niche uses moreso than daily driver type computer.
I think it maxes out at OS X El Capitan software, which will limit what you can do with it
It was just fully RESET so the OS is not installed and you will need to login to your apple account to reinstall the OS.
Everything in the photo is included:
Mac Mini, Power adapter, & display output adapter
OS X El Capitan (Vers 10.11.6)
Mac Mini (Early 2009)
Processor: 2 GHz Intel Core 2 Duo
Memory: 4GB 1067 MHz DDR3
Graphics: NVIDIA GeForce 9400 256 MB
Serial Number: YM92321V19X
https://everymac.com/systems/apple/mac_mini/specs/mac-mini-core-2-duo-2.0-early-2009-nvidia-specs.html