 Hi, I'm Andy from readle and in this video We're going to be talking about the term hot swappable now when I say hot swappable I don't mean the kind of party where you would put your car keys into a bowl in the intercom world Hot swappable refers to the fact that you can take different elements of the system Unplug them plug them back in remove them put them back in all without having to shut the system down We can take out the power supply or the CPU card of an intercom system While it's in operation and the user will not notice any difference