I am parting out a R10. [1.] If an R10 owner needs to replace their MB do they need a matching hard drive with Windows 10 Home that matches the service tag of the new MB?  [2.] Or just the Service tag of MB?[3.] Or is their own original service tag all they need? They will be hoping Windows 10 Home “activates”.  1. NOT RELEVANT FOR WIN 10 ACTIVATION   2. DITTO 3. DITTO  What they do need to know from you is what version of windows (home/pro) was installed OEM by Dell when you purchased it.  Dell and Microsoft are separate entities.  The service tag is just for Dell purposes, not Microsoft purposes. 
I am parting out a R10. Wondering what is the best solution for the buyer in terms of the motherboard?  Likely buyers:  R10 owner who needs to replace their MB. Non-R10 owner.  If an R10 owner needs to replace their MB do they need a matching hard drive with Windows 10 Home that matches the service tag of the new MB? Or just the Service tag of MB?Or is their own original service tag all they need? If one sells something it is nice to resolve a problem, not create yet another. They will be hoping Windows 10 Home “activates”. The non-R10 owner will likely need the matching windows HD unless they are advanced enough to recover windows with only the service tag? Correct me if I am wrong. I imagine they will need the whole front panel to get the MB to boot without errors. 
Parting Out An Aurora R10 Including The Motherboard…