diff --git a/files/initrd/opt/rr/serialnumber.yml b/files/initrd/opt/rr/serialnumber.yml
index 821e6cba..83c0852b 100644
--- a/files/initrd/opt/rr/serialnumber.yml
+++ b/files/initrd/opt/rr/serialnumber.yml
@@ -45,6 +45,13 @@
     - "TQR"
   suffix: "alpha"
   macpre: 9009d0
+"DS925+":
+  prefix:
+    - "2520"
+  middle:
+    - "YHR"
+  suffix: "alpha"
+  macpre: 9009d0
 "DS1019+":
   prefix:
     - "1850"