These are the exact SODIMM Modules recommended for UGREEN NAS, see their website to confirm. These are rare and hard to find these days! Upgrade now to support running VM's on your NAS!!

This is for a total of 64GB DDR5 RAM, Samsung SODIMM DDR5-4800B, with 2 modules each containing 32GB of capacity. 
2x Samsung M425R4GA3BB0-CQK0D SODIMM's

These can also be used for other systems (Laptops & NUC's) which use DDR5 SODIMM's at this speed.

See my feedback and buy with confidence!