TP-Link MC200CM - MC220 L SFP Module Installation

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Note:
Either two MC200CM or two MC210CS could cooperate. MC220L can
be plugged in with two kinds of SFP modules, single-mode or
multi-mode.
Plug the SFP module into MC220L
Transmits and receives data between two MC220L
Note:
Two MC220L with the same SFP module could cooperate.