Grandstream is still trying to keep 1GBE networking alive even though 2.5GBE has been out for years now. The level of commitment needed to keep pretending that consumers only want Gigabit is impressive.
Does it come with rack mount ears? Datasheet says Desktop, Wall-Mount, or Rack-Mount(rack-mounting kits included), but you didn't say anything about ears when you're taking it out of the box