Gigamon TAP-251

The G-TAP M Series is a family of high-density, passive fiber optical TAPs,
that require no power source to operate. By splitting the light optically, the
G-TAP M Series enables network operators to passively monitor full duplex
fiber optic links, without impacting network traffic. Up to 36 full duplex links
can be tapped in a 1RU space, allowing for more visibility with less space
and lower costs.