diff --git a/.gitignore b/.gitignore
index 42ebb55..abd6139 100644
--- a/.gitignore
+++ b/.gitignore
@@ -31,3 +31,6 @@ ROMSIMM8MB.4402B/Documentation/Thumbs.db
 ROMSIMM2MB.4401A/Documentation/Thumbs.db
 ROMSIMM8MB.4402A/Documentation/Thumbs.db
 Documentation/Thumbs.db
+*.kicad_prl
+ROMSIMM-backups/*
+Documentation/~$4402AManual.docx