Fiber optic cassette system with slantable connector

A rack mountable fiber optic cassette system for interconnecting a first plurality of optic fibers with a second plurality of optic fibers, the system comprising:

• a case comprising a top and a bottom wall and two opposed sidewalls, each of said sidewalls attached between respective side edges of said top and bottom wall, said walls together defining a tray receiving space therebetween and a forward edge of each said wall together defining an opening to said tray receiving space;
• at least one tray slideably received within said tray receiving space for movement between a stored position wherein said tray is completely inside said tray receiving space and an accessible position wherein a front end of said tray is in front of said opening and outside of said tray receiving space, said tray having a width dimensioned to receive a plurality of standard width cassettes side by side;
• and
• a plurality of like elongate cassettes arrangeable in parallel side by side on said tray, each of said cassettes comprising a housing, at least one front optic fiber connector-receiving receptacle arranged along a housing front face for receiving a terminated end of at least one of the first plurality of optic fibers, at least one rear optic fiber connector-receiving receptacle arranged along a housing rear face for receiving a terminated end of at least one of the second plurality of optic fibers and a third plurality of optic fibers in said housing between said at least one front optic fiber connector-receiving receptacle and said at least one rear optic fiber connector-receiving receptacle, said third plurality of optic fibers for interconnecting the terminated end of the at least one of the first plurality of optic fibers with the terminated end of the at least one of the second plurality of optic fibers, wherein said rear optic fiber connector-receiving receptacle is moveable in a horizontal plane between a first position wherein said rear receptacle is arranged at a first angle to a cassette axis and a second position wherein said rear receptacle is arranged at a second angle to said cassette axis.