I have 2 512 pumps both are in great working condition one has the old software version the other has the new version, but both work perfectly. I also have a large supply of NEW UNOPENED Paradigm Medtronic Minimed 512 Insulin Pump Supplies. I have infusion sets, reservoirs, iv prep pads, unisolve adhesive remover pads, and other diabetic supplies for sale. Please ask any questions and I will answer them.