a fiber optic connector is mounted to a fiber optic connector holder . the holder can be a separate piece mountable to other devices , such as trays , panels , modules , cassettes , and chassis . alternatively , the holder can be integrally formed with the device . in some implementations , multiple holders can be provided as separate elements , or as an integral element . the fiber optic connector holder holds the fiber optic connector in position ready for connection to another fiber optic connector at a desired time . the holder receives a fiber optic adapter , and a second fiber optic connector . the adapter aligns the two connectors for fiber optic signal transmission . the fiber optic connector holder includes a clip for clipping to the first connector .