I recently bought a UPS, however, the only outlets take this sort of connector:

But, the other end of the cables is like this (right):

The thing is, I really need to connect it to a power bar, so I need a cable that has one end like in the first photo, and the second end like this (right side):

I've searched around for quite a while, and asked at a few shops, but cannot seem to find a cable that will fulfill this purpose. This seems crazy to me, as I would think that a UPS wouldn't only be able to be attached to devices that take the relatively obscure output seen on the right side of the second image I posted. Do I need to buy another UPS that has the proper connectors?? Please help!!