What is GBIC
GBIC is an interchangeable product that meets international standards. Gigabit switches designed with GBIC interfaces have a large market share due to flexible interchangeability.
GBIC modules are divided into two categories: one is the GBIC module used in common cascade connection, which realizes the ordinary connection with other switches; the other is the stack dedicated GBIC module, which realizes the redundant connection with other switches.
Currently, GBIC is basically replaced by SFP for the following reasons:
SFP (Small Form-factor Pluggables) can be simply understood as an upgraded version of GBIC.
The volume of the SFP module is half that of the GBIC module, and the number of ports can be more than doubled on the same panel.
Because the SFP module is basically the same as GBIC in function, it is also called Mini-GBIC (Mini-GBIC) by some switch manufacturers.
GBIC picture
GBIC(3 photos)