diff --git a/README.md b/README.md
index c4f379e..08668e5 100644
--- a/README.md
+++ b/README.md
@@ -9,3 +9,9 @@ This is a simple saw-wave generator VCO that features 1/v per octave functionali
 - Standardized package for all the resistors (it looks like I am using two different packages)
 - Standardized potentiometers (looks like I am using two different styles of potentiometer)
 - ZOE interface (the large 50-pin ribbon connector I like)
+- Bill of Materials
+
+### Notes:
+This VCO conforms to the dimesnions of a Eurocard (100mm x 100mm).
+
+By extension, it conforms to the Eurorack modular synthsizor convention, where the PCB is inside the rack and the connectors are sticking out the front. Due to this layout, the VCO could either be a 1u or 2u module depending on how you want to connect the panel components.
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