An external power adapter means a DC power input, which can be upgraded with a LiIon battery. It’s more expensive to do for AC. That’s a very nice upgrade in m

An external power adapter means a DC power input, which can be upgraded with a LiIon battery. It’s more expensive to do for AC. That’s a very nice upgrade in many places, and for many scenarios. A power brick, meanwhile, is easy to hide out of sight.