Various adapter caps are available to convert the mount to the desired connector style. The OFS 300-200C uses the same common threaded connector adapter caps as the Noyes Optical Power Meters and Loss Test Sets. The OFS 300-400C utilizes special precentered snap-in adapter caps, which ensure proper fiber location in the viewing area. Both the OFS 300-200C and OFS 300-400C are shipped with universal adapter cap and holster.The OFS 300-400C with 400x magnification is available for more critical inspection during termination, especially with singlemode fibers.