diff --git a/hardware/rev_b.md b/hardware/rev_b.md
index 4259e60..a993c00 100644
--- a/hardware/rev_b.md
+++ b/hardware/rev_b.md
@@ -37,6 +37,8 @@ Mount the two M3x12 standoff F-F (Yellow) at the front with the last two of the
 
 Place the displays on the top of the 11mm standoffs and mount them with the 6mm screws.
 
+**NOTE**: The WeAct displays have 8 pins, the displays with frontlight have 10 pins. They both work fine with the Rev. B board. When using WeAct displays the two most right pins are not used. 
+
 <img src="../media/Rev.B/IMG_3317.jpeg" width="750"/>
 
 Keep in mind that at the corners on the top of the first (left corner) and last (right corner) display you don't use a screw, this is where a 6mm standoff has to placed to screw the front pcb in combination with acrylic front. For mounting the fromt pcb with the acrylic front use the M3x10 screw.