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Just adding some information since I want to help you, the NUC supports two 1.2V DDR4, 2133MHz, Non-ECC, Maximum of 32GB. This tells us that the modules you mentioned should work properly with the system. However, the frequency will be down-clocked from 2666 to 2133 which is the maximum supported by the system.Regarding the Acer unit, I would not be able to tell since the specifications and the details of the unit are handled by Acer* themselves and they should be able to respond about it.
If you need more assistance please refer to the sites or information provided above.
I hope this helps.
Intel Customer Support Technician
Under Contract to Intel Corporation