Whatsminer Power Supply Unit Signal Cable P21 P21E P21D 14pin Dual 7pin Flex
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Whatsminer P21 PSU Signal Cable – 14-Pin to Dual 7-Pin Flex Connector
This flat ribbon signal cable connects the Whatsminer P21, P21E and P21D power supply units to the miner's control board, carrying the communication and status signals that allow the firmware to monitor PSU health, enable output and read fault conditions. The 14-pin to dual 7-pin flex configuration matches the P21-series connector pinout exactly, providing a secure and reliable data link between PSU and controller.
Why the Signal Cable Matters
The signal cable is the communication lifeline between the PSU and the control board. It carries enable signals, voltage-good feedback, over-temperature warnings and fault flags. A damaged or degraded cable causes intermittent PSU communication failures — the miner may refuse to start, shut down unexpectedly or report PSU errors in the dashboard even though the power supply itself is functional. Replacing a suspect cable is one of the fastest diagnostic steps when troubleshooting P21-series PSU issues.
Installation
Power off the miner. Unplug the old signal cable from both the PSU connector and the control board header. Insert the new cable with the locking tabs aligned — the flat ribbon must sit flat without twisting. Press both connectors firmly until they click. Power on and verify the PSU reports normal status in the miner dashboard with no communication errors.
P21 Signal Cable Specifications
| Parameter | Value |
|---|---|
| Cable Type | Flat ribbon flex |
| Connector A | 14-pin |
| Connector B | Dual 7-pin |
| Compatible PSUs | Whatsminer P21, P21E, P21D |
| Condition | New |
Related Whatsminer PSU Cables & Accessories
- 18P Data Cable – Whatsminer M21B PSU Connection
- DA08025B12UG 80mm Fan – Whatsminer P21 PSU Cooler
- PCI-Express Signal Cable – Avalon PSU Connection
- Whatsminer P21 PSU Transformer
Maintaining Whatsminer P21 power supplies? Contact us at contact@lys-sz.com for signal cables, fans and PSU repair components.
Worldwide shipping from our Shenzhen warehouse.
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