diff --git a/installations/MazdaMiataNB2_Frankenso/Frankenso.md b/installations/MazdaMiataNB2_Frankenso/Frankenso.md
index 1eb5c3b3..40c6eaf2 100644
--- a/installations/MazdaMiataNB2_Frankenso/Frankenso.md
+++ b/installations/MazdaMiataNB2_Frankenso/Frankenso.md
@@ -1,3 +1,23 @@
+Legacy HW wiki https://rusefi.com/wiki/index.php?title=Manual:Hardware_Frankenso_board
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+Q: Why three USB connectors?
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+A: https://rusefi.com/forum/viewtopic.php?f=4&t=1418
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 Pinouts
 
 https://rusefi.com/wiki/index.php?title=Vehicle:Mazda_Miata_2003