Assume it's soldered unless you see "SO-DIMM" or "upgradeable.

Yes, but you have to dig past the marketing. The product page will happily say “16GB RAM” and never mention whether it’s soldered or socketed.

The only reliable way is to find the service manual or detailed specifications PDF from the manufacturer. Look for phrases like “two SO-DIMM slots” or “memory: DDR5, replaceable.” If you see “onboard,” “fixed,” or “not user-serviceable,” it’s soldered.

Don’t trust the “RAM type” field on retail sites—they often just copy a generic spec. If you can’t find a manual, search for a review on Notebookcheck or a teardown on YouTube. Someone has already opened the thing.

Better to know before you buy than to be stuck with 8GB forever.