No it's not. It's meant for any port, but this model has it's own port so you don't need to keep plugging and unplugging it. You can leave it in and daisy chain

No it's not. It's meant for any port, but this model has it's own port so you don't need to keep plugging and unplugging it. You can leave it in and daisy chain by plugging your headset or speaker into it rather than directly.