ATTO Technology FastStream VT 5700 Installation And Operation Manual page 9

LEDs on the front are:
A green power LED
A bicolor Ready/Fault LED is lighted green to
indicate ready, lighted yellow to a faulted condition,
and off indicates not ready.
Exhibit 1.1-1 The connector side of the FastStream VT 5700.
Exhibit 1.1-2 The faceplate of the FastStream VT 5700.
Fibre Channel ports: bicolor LED indicates FC
speed. If it is off, speed is 1-Gb. If it is green it indicates
2-Gb. A yellow light indicates 4-Gb FC. A separate
green LED indicates activity if it is illuminated but
indicates no activity if it is off.
4