diff --git a/arccer/boards.md b/arccer/boards.md
index f537764..3313ee0 100644
--- a/arccer/boards.md
+++ b/arccer/boards.md
@@ -15,9 +15,12 @@
 
 **Power**: 12V 5A DC, barrel jack (DC5525 ?), center positive
 
-**Extra**: Senselock? USB security dongle glued on the USB-A connector on the motherboard inside the case
+**Extra**: Senselock IV USB security dongle glued on the USB-A connector on the motherboard inside the case
 * The glue may have been spilt onto capacitors or other nearby components right from the factory - take care if the dongle has to be removed
 
+**OS**: Windows XP Service Pack 3, likely pirated
+* Has keyboard filter enabled, cmd disabled by group policy, and customized shell
+
 **Games found using**: 
 * Dance³/Dance Cube 2 (舞立方2) (maimai ripoff) (main board, advertising panels run on another board)
 * 美拍小鼓王