Janira bought an M.2 drive because someone told her it is the fastest technology available and his motherboard supports it. Upon testing her drive, Janira realizes that it doesn't go beyond 6GBPS as...

Janira bought an M.2 drive because someone told her it is the fastest technology available

and his motherboard supports it. Upon testing her drive, Janira realizes that it doesn't go

beyond 6GBPS as his old 2.5 inch SSD drive.

What could the problem be? Explain clearly.