diff --git a/Drive-Overview.md b/Drive-Overview.md
index b4ce9b6..e169129 100644
--- a/Drive-Overview.md
+++ b/Drive-Overview.md
@@ -6,8 +6,9 @@ At purchase the CM-MiniCNC was setup for 3 axis with CW-5045 Stepper Drivers and
 
 1. Power input type: 20VDC~50VDC
 2. Output current: 1.5A - 4.5A
+3. Signals: +5V
 
-These driver are optically isolated and safe to use without further isolation **but(!)** the manual indicated signals are +5V.
+These driver are optically isolated and safe to use without further isolation, the manual indicated signals are +5V.
 
 # Ball Screws
 TODO: measure ball screws
\ No newline at end of file