Norton 360 Multi-Device license is good for up to 5 devices only. You will not be able to add an extra license to the same product, but you can only buy it as a second product to get protection for another 5 devices under the second license. There are some alternatives though, depending on how many alike (same OS) devices you have. For example:
- If you have 3 PC computers (desktops/laptops running Windows OS), you can buy Norton 360, standard or Premier edition as both are good for up to 3 PCs. Then, you can buy Norton 360 Multi-Device to cover any additional PC, and also cover Android or Mac/iOS devices (up to 5 devices, combined).
- The other option is to obtain Norton One. With Norton One, you can add additional devices to your existing subscription, that is, you do not need to buy an additional product.