diff --git a/recipes-phosphor/sensors/phosphor-hwmon/rainier/obmc/hwmon/ahb/apb/bus@1e78a000/i2c-bus@780/i2c-switch@70/i2c@3/max31785@52.conf b/recipes-phosphor/sensors/phosphor-hwmon/rainier/obmc/hwmon/ahb/apb/bus@1e78a000/i2c-bus@780/i2c-switch@70/i2c@3/max31785@52.conf
new file mode 100644
index 0000000..d3df215
--- /dev/null
+++ b/recipes-phosphor/sensors/phosphor-hwmon/rainier/obmc/hwmon/ahb/apb/bus@1e78a000/i2c-bus@780/i2c-switch@70/i2c@3/max31785@52.conf
@@ -0,0 +1,17 @@
+LABEL_fan1 = "fan0_0"
+
+LABEL_fan2 = "fan1_0"
+
+LABEL_fan3 = "fan2_0"
+
+LABEL_fan4 = "fan3_0"
+
+LABEL_fan5 = "fan0_1"
+
+LABEL_fan6 = "fan1_1"
+
+LABEL_fan7 = "fan2_1"
+
+LABEL_fan8 = "fan3_1"
+
+TARGET_MODE = "RPM"
diff --git a/recipes-phosphor/sensors/phosphor-hwmon_%.bbappend b/recipes-phosphor/sensors/phosphor-hwmon_%.bbappend
index 5742840..8e4d5f6 100644
--- a/recipes-phosphor/sensors/phosphor-hwmon_%.bbappend
+++ b/recipes-phosphor/sensors/phosphor-hwmon_%.bbappend
@@ -76,6 +76,7 @@
 
 CHIPS_rainier = " \
                bus@1e78a000/i2c-bus@400/max31785@52 \
+               bus@1e78a000/i2c-bus@780/i2c-switch@70/i2c@3/max31785@52 \
                "
 
 ITEMSFMT = "ahb/apb/{0}.conf"