Tested and working. Comes with power cord, HDMI, and DisplayPort cable. Windows 11 is installed. 

Specifications:

Model: Dell OptiPlex 3070 Small Form Factor

Processor:  Intel® Core™ i5-9500 (6 Cores/9MB/6T/3.0GHz to 4.4GHz/65W)

RAM: 16 GB DDR4 RAM

Storage: 256 GB NVME SSD

Optical Drive: DVD-RW drive

OS: Windows 11

Ports:

2x front/2x back USB 3.1 Gen 1

2x front/2x back USB 2.0

1x HDMI 1.4 Port

1x DisplayPort 1.2

1x Serial

1x RJ-45 Ethernet Port

1x front /1x back 3.5 mm Jack

Size: H 11.42" x W 3.65" x D 11.50"

Weight: 11.57"