From one of the comments above: "It's not the box, but a small plastic enclosure"
And while I sympathise, consider that this is part of packaging for a computer, where the manufacture of the computer itself will consume many times as many resources, and the power to use the computer over its lifetime will consume many times as many resources. With respect to the overall environmental impact of the purchase of that device, the inclusion of a device like that will be a rounding error.
It's not really an excuse to waste more resources though. Saying "this only wastes a tiny amount of resources compared to this other thing" isn't justification to waste it anyway.
And while I sympathise, consider that this is part of packaging for a computer, where the manufacture of the computer itself will consume many times as many resources, and the power to use the computer over its lifetime will consume many times as many resources. With respect to the overall environmental impact of the purchase of that device, the inclusion of a device like that will be a rounding error.