diff --git a/Supported-Systems.md b/Supported-Systems.md
index a80650e..0149d42 100644
--- a/Supported-Systems.md
+++ b/Supported-Systems.md
@@ -51,4 +51,6 @@ Amiga 500 with an A590 running Workbench 1.3. - Only sees drives as 500mb, possi
 
 ## Not working 
 
-* Amiga 2500UX with an A2091 SCSI card - Sees drive, but throws error.
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+* Amiga 2500UX with an A2091 SCSI card - Sees drive, but throws error.
+
+* PowerMac 4400 - Users have reported it not working.
\ No newline at end of file