xbox one mtu is 1480 is that on all xbox ones ?

hey i got an xbox one but the mtu on it says 1480   the correct mtu for cable internet is 1500 how come the xbox is wrong  what does urs say ?

im thinkin maybe thats why the downloads are so slow

Mine is set to 1480 even though the MTU on my router is 1500. It's never caused me any issues though.