ASK NC

Hello.
Just a quick question.
I have got QNAP TS-251D and looking to upgrade RAM on it.
Is any of this two compatible with it?

https://www.amazon.co.uk/Crucial-CT4G4SFS8266-2666MHz-260-pin-SO-DIMM/dp/B07HP78DZ5/ref=sr_1_3?dchild=1&keywords=crucial+sodimm+ddr4+ram+4gb&qid=1585221084&sr=8-3

https://www.amazon.co.uk/Crucial-CT4G4SFS824A-PC4-19200-Single-260-Pin/dp/B019FRDKWI/ref=sr_1_1?dchild=1&keywords=crucial+sodimm+ddr4+ram+4gb&qid=1585221084&sr=8-1

Best regards
Sergii

I have added compatible RAM sticks here:https://nascompares.com/ram/qnap-ts-251d-compatible-ram-memory-upgrade/I hope this helps.