I have a hardware-related question. I want to know whether and how Thunderbolt 3 connectivity can be added to my PC setup.
This answer says that questions regarding computer hardware can be asked on .Super User.
I've posted my question twice, but it keeps getting closed as off-topic. The private message says "Instead of asking what to buy, try asking how to find out what suits your needs." - but I'm not asking what to buy!
Flagging for moderator intervention and asking for explanation didn't help. The flag got removed in seconds without further explanation.
How can I rephrase my question to make it comply with Super User's guidelines?
Alternatively, is there another site where I can ask this question?