Does this computer, Dell optiplex 7040 D11S have an ethernet connection?

Yes, this computer has an ethernet connection with an integrated LAN chipset and a LAN speed of 10/100/1000Mbps.

does this computer have an ether net connection?

Yes, this computer has an Ethernet connection with a LAN speed of 10/100/1000Mbps.

The system comes with integrated Intel HD Graphics 530.

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Dell Optiplex 7040 D11S Desktop PC - Core i5 (6500) 3.2GHz Quad Core - 256GB SSD - 8GB RAM - DVD - Windows 10 Pro Installed

Microsoft Registered Refurbisher
90 Day Warranty
For Daily Computing at Home or Office
Great for Web Browsing and Microsoft Office Applications
Includes Power Cable(s)
Hard drive trays are provided for drives purchased with the unit, if applicable.