diff --git a/m1r4/dsv/EXTRA b/m1r4/dsv/EXTRA
new file mode 100644
index 0000000..f7844c0
--- /dev/null
+++ b/m1r4/dsv/EXTRA
@@ -0,0 +1,2 @@
+N: usbpwr
+D: http://www.usb.org/developers/whitepapers/power_delivery_motherboards.pdf
diff --git a/m1r4/dsv/Makefile b/m1r4/dsv/Makefile
index 2227eba..f958f87 100644
--- a/m1r4/dsv/Makefile
+++ b/m1r4/dsv/Makefile
@@ -13,7 +13,7 @@ BOM = milkymist_one_bom_r4.csv
 all:		dsv
 
 dsv:		BOOKSHELF
-		../../../eda-tools/dsv/dsv setup BOOKSHELF
+		../../../eda-tools/dsv/dsv setup BOOKSHELF EXTRA
 
 BOOKSHELF:	$(BOM) bomshelf SUPPLEMENT
 		./bomshelf $< >$@ || { rm -f $@; exit 1; }