For use with MIL-C-81659B, ARINC 404, and DSX Series connectors, the size-5 EN4531 optical adapter is available in both male and female versions for either plug or receptacle DSX connectors. It is suitable for standard EN4531 multimode optical contacts. Allegedly, performance meets and/or exceeds EN4531 requirements and the adapter easily dethatches using a standard extraction tool. RADIALL USA INC., Chandler, AZ. (480) 682-9400.