Does the switch have a built-in optical module
Optical ports on switches typically accommodate optical modules for transmitting data via fiber optic cables. In situations where there's a shortage of Ethernet ports, some users may insert Ethernet port modules into optical ports to connect with copper cables for. Users can easily expand storage space using microSDHC or microSDXC cards up to 2TB (sold separately). SFP (Small Form-factor Pluggable) and QSFP (Quad Small Form-factor Pluggable) are common optical module interfaces found on switches.
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