H3C WX5004 Installation Manual page 28

 The fiber ends are clean.
Align the end of an SFP module without a handle with an SFP interface and
1.
carefully insert the SFP module into the SFP interface.
Figure 12 Insert an SFP module
Distinguish between the Rx and Tx interfaces on the SFP module. Connect the LC
2.
connector at one end of an optical fiber to the Rx interface of the access controller
and the LC connector at the other end of the optical fiber to the Tx interface of the
peer device. Use another fiber to connect the access controller and the peer
device in the opposite way.
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