Exterior shows signs of wear which is to be expected from a used item. Available internal SATA HDD/SSD drive tray for additional storage. 2 x DisplayPort++ (++ means you can use a DisplayPort to HDMI cable). 6 x USB-A 3.0.
1 x USB Type C 3.0. 3.5mm headphones and headset. Comes with genuine HP 65 watt AC adapter cable. You may not receive the same one in the pictures.
Check out ServeTheHome, ETA Prime, and Retro Game Corps on YouTube for even more ideas.