RJ11 ↔ QSFP28
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Compatibility check and signal path analysis
Adapter Required
These connectors are not directly compatible. An adapter or converter cable is needed.
Recommended: RJ11 to QSFP28 adapter
Signal Path
RJ11
Family
Network
Form Factor
Rectangular with tab (narrow)
Pin Count
6
Reversible
No
QSFP28
Family
Network
Form Factor
Rectangular module (wide)
Pin Count
38
Reversible
No
Notes
RJ11 to QSFP28: Both are network connectors but may use different physical layers (copper vs fiber). A media converter or transceiver module is needed. The RJ11 (Network) and QSFP28 (Network) share the same connector family.