Starlink Cable & Connector Compatibility Chart: RJ45, DC5521, Anderson, PoE

Starlink Cable & Connector Compatibility Chart: RJ45, DC5521, Anderson, PoE

Starlink Cable & Connector Compatibility Chart: RJ45, DC5521, Anderson, PoE

A reference chart of the connectors used across Starlink accessories and outdoor wireless: RJ45/PoE, DC5521 (5.5x2.1mm), Anderson for high current, and which PLZTECH product uses which.

Accessory returns often come down to one thing: the wrong connector. This chart maps the connectors used across Starlink dishes, power adapters and outdoor wireless, so you can match cables before you ship.

1. Connector reference

ConnectorUsed forNotes
RJ45 (CAT5e/6)Data + PoE to dish / APPoE 24V or 48V; use outdoor-rated cable
DC5521 (5.5×2.1 mm)12V/24V gear, DeWalt adapter outputCentre-positive; check polarity
Anderson (SB50)High-current battery feedsUsed on 24V banks and bridge PoE injectors
Proprietary dish plugStarlink dish to its PSUDo not adapt; use the matched PSU

2. PLZTECH product × connector

ProductConnector inConnector out
144W 48V Adapter (PL72-V3V4)IEC C8 ACRJ45 PoE
12V→30V Step-UpCigarette lighter / DC5521RJ45 PoE
DeWalt 20V AdapterDeWalt 20V slideDC5521
25 km BridgePoE (RJ45)PoE (RJ45)

3. Cross-compatibility warnings

  • DC5521 vs 5525: a 5.5×2.5 mm plug looks identical but won't seat on a 2.1 mm jack — verify the inner pin size.
  • Polarity: most 12V gear is centre-positive; reversing it can damage the device.
  • PoE voltage: 24V and 48V injectors are not interchangeable; match the AP's rating.

When in doubt, ship the matched cable with the product. A 2-cent connector mismatch is the most expensive return you will ever process.

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