Officially no, the sticker on top also serves to distribute the heat generated by the controller over the whole disk. On the other hand, it's true that the temperature of the ssd can be frightening and I use either the original heatsinks on many motherboards or dedicated coolers bought separately on all my pci-e gen 4 ssd (like this one).
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The Silicon Power PD60 just happens to have a JMicron controller chip? These controllers can cause problems when reading NVMe SSDs. Unfortunately, I also discovered that the Sandberg NVMe case also has a JMicron controller and a Kingston Fury Renegade did not work with it either (the slightly better KC3000 :) ). These Icy Cases also have JMicron controllers. The SSDs run without problems only with the Realtek controller chip. You can find them in Orico cases, for example, Orico cases are sold on Amazon, but JMicron, that's a no-go for many new SSDs. Of course, I could also imagine that Synology can't recognise the controller properly.
Synology's compatibility list only shows SSDs of 400GB and 800GB.
https://www.synology.com/de-de...
This SSD can certainly be "installed" in a DS1522+ (hardware-wise), but whether it is also supported (recognised) by the NAS, I have no idea. In any case, the NAS should be updated to the latest version beforehand.
It depends somewhat on the Lenovo model, but as a rule 2280 SSDs can also be installed in these notebooks. However, the existing SSD would have to be removed.