The EXFO Connector Adapter for 1.25 mm Ferrule with tether (vendor part GP-2254, Millennium part 524870) lets a test jumper terminated in an LC or MU connector plug into the EXFO MPC-100 Micro Power Checker for quick power readings in the field. The attached tether keeps the small adapter from getting lost on a busy splice trailer or truck. It's a low-cost accessory that field techs replace as connector types on a job change. Stock a few alongside the other MPC-100 adapter styles to cover SC, LC and hybrid ferrule sizes.