diff --git a/device-types/Lenovo/FLEX-SYSTEM.yaml b/device-types/Lenovo/FLEX-SYSTEM.yaml
index 5635cc88..e60e078a 100644
--- a/device-types/Lenovo/FLEX-SYSTEM.yaml
+++ b/device-types/Lenovo/FLEX-SYSTEM.yaml
@@ -1,7 +1,7 @@
 manufacturer: Lenovo
 model: Flex system
 slug: flex-system
-part_number: 8721
+part_number: 8721W3X
 u_height: 10
 subdevice_role: parent
 interfaces: