Hot Swap/Hot Plug is supported in the base SATA spec. It's been part of the spec for dang near 10 years. This includes power AND data cabling. Some (a very small percentage) of motherboards don't support. They don't support it because they were built wrong. I haven't owned a computer since 06 that hasn't properly supported hot swap. If they meet SATA spec, they are capable of hot swapping/hot plugging. However you want to call it.