Best way to check if it's fake is the email address, it's not a conclusive way but filters out 90% of scams. Email address should atleast have a authentic domain.
https://drop.com/buy/qudelix-5k-bluetooth-usb-dac-amp#signupv2
Okay sorry just read you need more ports and looks like you are looking for a desktop DAC.
I could be wrong but isn't the amount of space much much more for it be saturated easily? And it should be cheap add a dispose mechanism where it needs to just push the satellite out of orbit when it reaches end of it's life.
Yes they definitely do that. That's why I don't personally use it, Google's own spam detection works 90% of the time for me. I wish there was a good solution to this, if anyone has any solution please share