Making an Optiplex wireless enabled?

by new optiplex do you mean New models?  optiplex 7080 and the like is equipped with wireless.

optiplex-7080-spec-sheet.pdf (delltechnologies.com)

Wireless
Ports
Qualcomm® QCA61x4a 802.11ac dual band 2x2 + Bluetooth 5.0
Qualcomm® QCA9377 802.11ac dual band 1x1 + Bluetooth 5.0
Intel® Wi-Fi 6 AX201 2x2 (Gig+) + Bluetooth 5.1

optiplex 7070 dell-optiplex-7070-specsheet.pdf (europc.co.uk)

Networking4 Integrated Intel I219-LM Ethernet LAN 10/100/1000
Qualcomm® QCA61x4A Dual-band 2x2 802.11ac Wireless with MU-MIMO + Bluetooth 4.2
Intel® Wireless-AC 9560, Dual-band 2x2 802.11ac Wi-Fi with MU-MIMO + Bluetooth 5
Intel® Wireless-AX 200, Dual-band 2x2 802.11ax Wi-Fi with MU-MIMO + Bluetooth 5

7060 OptiPlex_7060_Spec_Sheet.pdf (dell.com)

Networking4 Integrated Intel I219-LM Ethernet LAN 10/100/1000
Qualcomm® QCA61x4A Dual-band 2x2 802.11ac Wireless with MU-MIMO + Bluetooth 4.2
Intel® Wireless-AC 9560, Dual-band 2x2 802.11ac Wi-Fi with MU-MIMO + Bluetooth 5

7050/7040/7020 wireless is optional Dell OptiPlex 7050 Spec Sheet (thetelecomshop.com)

PowerPoint Presentation (uconn.edu) CSG-EN-XX-ALL-OptiPlex-7020-Technical-Spec-Sheet.pdf (dell.com)

Networking
Tower/Small Form Factor: Integrated Intel® i219-LM Ethernet LAN 10/100/1000; optional wireless: Intel® 8265 802.11ac+ Bluetooth 4.214 card

Networking MT/SFF: Integrated Intel® i219-LM Ethernet LAN 10/100/1000; Optional wireless:802.11ac+ Bluetooth 4.1 card

Networking Integrated Intel® I217LM Ethernet LAN 10/100/1000; supports optional wireless 802.11n card

@tje1 

Please press the blue Accept as Solution button below if this post answers your question.

Easiest solution is Edimax EW-7811UAC 

802.11AC Dualband Adapter with High Gain Antenna

No drivers needed Plug and play.

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