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Add warning to Sipolar A-173 hub listing#651

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JeffreyUrban wants to merge 1 commit intomvp:masterfrom
JeffreyUrban:sipolar-a173-no-vbus-switching
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Add warning to Sipolar A-173 hub listing#651
JeffreyUrban wants to merge 1 commit intomvp:masterfrom
JeffreyUrban:sipolar-a173-no-vbus-switching

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Summary

  • Adds a warning link to the Sipolar A-173 entry in the compatible hubs table, referencing Sipolar A-173 works #645
  • Multiple users have confirmed this hub does not cut VBUS despite reporting ppps
  • The manufacturer has confirmed it does not support per-port power switching
  • PCB inspection (revision A-173ESD_V3.2, Lpsen Technology, 2018-04-26) shows no load switch ICs, P-FETs, or any active switching components on downstream VBUS lines

Test plan

  • Verify README table renders correctly with the warning link

🤖 Generated with Claude Code

Multiple users have confirmed that the Sipolar A-173 does not
actually cut VBUS power despite reporting per-port power switching
(ppps). The manufacturer has also confirmed it does not support PPPS.
See issue mvp#645 for details.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
@JeffreyUrban JeffreyUrban mentioned this pull request Mar 17, 2026
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