If they ask you for it back then you need to hand it over. SKYQ equipment looks to be SKY's. Before that, once you have it, its yours. Just keep it for 3mths after you stop using SKY. If they do not ask for it back, then into the recycle bin.
I am going to assume that, if you have had any bits of equipment for 2-3+ years then the supplier is probably not going to want it back.