This is an original 210A black toner cartridge. Original means this toner is a brand new toner made by HP.
The black 201A toner can produce up to 1,500 pages of sharp black and grey scale prints before it will need to be replaced. So it's ideal for users who print regularly.
The toner has its own drum attached to it, this is the part of the printer which prints the toner into shape. This means you get a new drum every time you replace the toner, your maintained regularly an as often as possible.
The HP 201A black toner can be store for up to 6 months without its quality being affected, ideal if you're not ready to use it straight away.