How to add an extra internal USB 2.0 header
If you own the Optiplex DT or MT you know that Dell only provides one internal USB 2 header. For about 6 dollars (from China) you can add a second one. This allows you to connect two devices like a Wifi/BT card and a card reader inside your case. Not sure why Dell only provided one whereas HP models have two onboard in the 6300/8300. This is a simple solution. You'll just need to find a place for it inside your case.
https://www.amazon.com/gp/product/B076Q8685Y/?tag=tonymacx86com-20
What if I have the SFF Optiplex and no internal USB 2.0 header inside my case ?
There's a solution for that as well. Use an external USB 2 port and put this inside of your case for 2 USB 2 headers.
An easy solution for not a lot of money.
https://www.amazon.com/dp/B07DC8JV12/?tag=tonymacx86com-20
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If you don't want to wait weeks for shipment from China you can find one US seller on ebay.
USB2.0 Male to 2 ports 9Pin Female Externsion Cable.
www.ebay.com