IBM Nortel 10 - Manual (Page 27)

DANGER
Some laser products contain an embedded Class 3A or Class 3B laser
diode. Note the following.
Laser radiation when open. Do not stare into the beam, do not view
directly with optical instruments, and avoid direct exposure to the
beam.
Class 1 Laser Product
Laser Klasse 1
Laser Klass 1
Luokan 1 Laserlaite
Appareil A Laser de Classe 1
`
3. Remove the protective cap from the XFP module and store it in a safe
place.
4. Insert the XFP module into the XFP module port until it clicks into place.
Note: The illustrations in this document might differ from your device.
RS232 RS232
TX/RX TX/RX
LINK LINK 1 1
TX/RX TX/RX
LINK LINK 2 2
TX/RX TX/RX
LINK LINK 3 3
TX/RX TX/RX
LINK LINK 4 4
3 3
Attention: To avoid damage to the cable or the XFP module, make sure
that you do not connect the fiber-optic cable before you install the XFP
module.
Chapter 3. Installing and removing options 17