Not solved yet, but may be check out this post. 
I need to buy a new computer to be Win 11 compliant and the Dell Precision 3450 has all the basic components I need except a card reader and a wifi/bluetooth 5.0. I also want to add another 8 GB of ram.  Can I install these myself, I'm OK working inside a computer, and can I order them from Dell? I need to know the proper Dell product numbers for a card reader and a wífi/bluetooth adapter.  Also if there is a Dell ram which it would be best to use to match the installed ram or will any quality DDR4 ram work, Corsair for example. Thanks so much for your help.  
Adding Card Reader and Wi-Fi / Bluetooth 5.0 to Precision 3450 desktop