The Dexcom G4 Nightscout Case is made to fit most straight micro USB's and will protect the Dexcom USB port from breaking. It is a good idea to apply a little zip-tie around the usb to ensure that it is fixed. Click link for guides on setting up your Nightscout http://www.nightscout.info/wiki/welcome . Also remember to join the facebook page "CGM in the cloud". Please give feedback so we can make life easier for people with diabetes. Learn more about us at http://rounds.linehq.com. This case can be bought on Shapeways where the quality and support will be excellent: https://www.shapeways.com/model/2607001/dexcom-nightscout-case.html?