RB1100AHx4 Dude Edition Question

I have recently bought an RB1100AHx4 Dude Edition router that already comes with an M.2 drive. Part of the appeal with this unit is the SATA connections - I assume this allows something like an SSD drive to also be connected and used as storage. The router comes with the connecting SATA cables, so my question is, if I go ahead and fit an SSD drive, how do I avoid voiding the warranty? I have to open up the router and in doing so would I not be voiding said warranty?

Is there anything like that stated anywhere? It is meant to be opened for peripheral installation. Of course you cannot claim for the warranty if you damage something…