IBM DS3500 Installation, User's, And Maintenance Manual page 55

v You must remove the fiber optic cable from the SFP module before you remove
the SFP module from the port. See "Removing SFP modules" on page 38 for
more information.
v The speed of the SFP module determines the maximum operating speed of the
Fibre Channel port in which the SFP module is installed. For example, a 2-Gbps
SFP module that is connected to a 4-Gbps-capable port will limit the speed of
that port to a maximum of 2 Gbps.
Attention: Check the IBM part number, option number, and FRU part number
of the SFP module to identify its speed. There are no physical features that
distinguish an 8 Gbps, 4 Gbps, or 2 Gbps SFP module from each other.
CAUTION:
This product might contain one or more of the following devices: CD-ROM
drive, DVD-ROM drive, DVD-RAM drive, or laser module, which are Class 1
laser products. To avoid exposure to hazardous laser radiation, do not remove
the covers of the laser product, or use the controls, or adjust procedures other
than the specifications in this guide. There are no serviceable parts inside the
device (C026).
CAUTION:
Data processing environments can contain equipment transmitting on system
links with laser modules that operate at greater than Class 1 power levels. For
this reason, never look into the end of an optical fiber cable or open receptacle
(C027).
Attention: When you handle static-sensitive devices, take precautions to avoid
damage from static electricity. For details about handling static-sensitive devices,
see "Handling static-sensitive devices" on page 27.
To install an SFP module, complete the following steps:
1. Remove the SFP module from its static-protective package.
2. Remove the protective cap from the SFP module, as shown in Figure 23 on
page 38. Save the protective cap for future use.
Chapter 3. Cabling the storage subsystem and storage enclosure
37