I'm going to try to use an example. I want to withdraw say $200 worth of Usdt through the Ethereum network from a website. I am planning to then send that $200 usdt to another website. I should first request $200 Usdt first. Then request how much Ethereum? It would need to cover the sending fee so I should request at least $5 Ethereum?
Yes and make sure you choose Ethereum network if that's what you prefer.
Now once I have both $200 Usdt and $5 Ethereum in my Nano Ledger S Plus and am ready to send that $200 Usdt to another website, how exactly how would process work? I would enter the Usdt sending address and $200 Usdt right? Then whatever is current sending free with Ethereum will be deducted from the ledger? So if it costs $3 Ethereum to send, now I have 0 Usdt and $2 Ethereum left?
Request for USDT address on Ethereum Network from the Receiver, use the send button or whatever is available for sending on Ledger , paste the requested address(don't forget it has to be on same network with your available USDT) , input the amount and hit send (or any alternative used by ledger ) to complete the transaction.
But you say I will be sending USDT and Ethereum to the same address... but am I manually doing that only for Usdt? The Ethereum fee, is the Nano Ledger S Plus will handle it?
Your ETH address is same with your USDT(ERC20) you can confirm that yourself, you don't need to confuseyour self, just go directlyto the USDT under ETH and copy the address (I mean your address now when you want to receive under Ethereum network)
I already told you I don't use Ledger, so I don't know how the UI looks like but i do know that there should be a way to select your USDT and send them.
The wallet will automatically subtract the fee from your ETH, the calculation should also be done auto. but if there's an option to adjust fee you can use
https://etherscan.io/gastracker to know what to use.
Here's a little help :
https://info.etherscan.com/how-to-send-eth-token/Now what if I did this on Trustwallet or Exodus wallet?
Like receive?
I wouldn't recommend any of those two wallets and on a normal day I wouldn't even recommend Ledger as a reputable Hardware wallet.
Use Unstoppable wallet instead:
https://unstoppable.money/