Do I need a wireless adapter for a desktop if I'm setting up a wireless network and can still?

As davidwpa said, there is no need for a wireless adapter, unless you want to use your desktop somewhere where a cable wouldn't reach.

You will actually end up getting better performance this way...

No. You can directly wire your desktop into the router with an ethernet cable and use the wireless router solely for the laptop. As I speak that is my exact configuration here.

Our desktop PCs are hardwired into the router and the laptop on which I'm answering this question is using a wireless connection.

Not true. The theoretical maximum a few years back for Ethernet was 10Mb, but commonly today's standard is 100Mb.

Wireless connections are more like 11Mb. If I want better connection to game servers, then I connect my laptop to the wireless connection to remove latency. So... Wired is usually better performance.

Really, though, if you're in a FTTH (fiber to the home location), then most likely your ISP (internet service provider) is really what is slowing you down. I mean... I have a 7.0Mb connection, and that's a fatty connection for where I am. FTTH can do "anything."

They sell it in 15Mb packages in some places.

This site even gives Fiber less than their normal 'premium' broadband. I think you know what the future will be.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.