diff --git a/keyboard/i75_ProMicro/pcb/readme.md b/keyboard/i75_ProMicro/pcb/readme.md
index 060cfe1f..50164c1a 100644
--- a/keyboard/i75_ProMicro/pcb/readme.md
+++ b/keyboard/i75_ProMicro/pcb/readme.md
@@ -1,3 +1,5 @@
+[How to order PCBs from gerber files](http://www.40percent.club/2017/03/ordering-pcb.html)
+
 EasyEDA ordering info:
 
 1.1