diff --git a/docs/expert/infrastructure/fiber-mapping.txt b/docs/expert/infrastructure/fiber-mapping.txt
index 2dfa7f3999cc2786b778c767d3c61838361878be..cebd4c1c3945657e883118816f3baa872a4ffe51 100644
--- a/docs/expert/infrastructure/fiber-mapping.txt
+++ b/docs/expert/infrastructure/fiber-mapping.txt
@@ -114,6 +114,14 @@ X2V33-47 (GE11_DAQ_PP_X2V31_MINUS)
   47 ---
   48 ---
 
+X2V33-46
+
+  Left  ???  GE-2/1/16/Ly1-X2V33-DAQ (TODO)
+  Left  ???  GE-2/1/18/Ly1-X2V33-DAQ (TODO)
+
+  Right Pink GE11-X2-MINUS-SPARE-3
+  Right Cyan GE11-X2-MINUS-SPARE-4
+
 X5J33-47 (GE11_DAQ_PP_X5J32_PLUS)
 
   1  GE11-X5-PLUS-DAQ-1
@@ -334,7 +342,7 @@ S2E01-14 (GEM+ -- FED 1468)
 S2E01-04 (GEMPILOT -- FED1469)
 
   AMC01
-    GE11-X2-PLUS-SPARE-3, (empty), (empty), MTP48 breakout (*)
+    GE11-X2-PLUS-SPARE-3, GE11-X2-MINUS-SPARE-3 (TODO), GE11-X2-MINUS-SPARE-4 (TODO), MTP48 breakout (*)
 
   AMC13
     TTC -- [yellow, no label] (B top/A bottom)