All 3 have been tested and found to be faulty. In heavily used condition. Sold for spares or repairs.

Graphics Processing Type: Integrated/On-Board Graphics
MPN: NA
Most Suitable For: Casual Computing
SSD Capacity: NA
GPU: Intel HD Graphics 4600
Colour: Black
Form Factor: All-In-One
Unit Type: kg
Release Year: 2013
Manufacturer Warranty: None
Features: Built-in Camera, Optical Drive, SD Card Slot
Unit Quantity: 13
Screen Size: 23 in
Brand: Dell
Series: Dell Optiplex
Type: All-in-One
Model: Optiplex 9020
Connectivity: HDMI, USB 2.0, USB 3.0, VGA, DisplayPort, Network Port
Storage Type: HDD (Hard Disk Drive)
Country/Region of Manufacture: China