- Zero Insertion Force.
Refers to a socket on a motherboard (typically a processor socket) which requires no force to insert the chip (or processor). Such a design minimises the risk of damaging the chip or the socket when inserting ore removing the chip. There is normally a locking mechanism which will lock the chip in place to prevent it from falling out.
For more information see:
- http://everything.explained.at/Zero_Insertion_Force - Zero insertion force explained.