diff --git a/src/board/system76/darp5/pnp.c b/src/board/system76/darp5/pnp.c
index c22422f..1146a87 100644
--- a/src/board/system76/darp5/pnp.c
+++ b/src/board/system76/darp5/pnp.c
@@ -25,9 +25,13 @@ void pnp_write(uint8_t reg, uint8_t data) {
 void pnp_enable() {
     DEBUG("Enable PNP devices\n");
 
-    // Enable PMC
+    // Enable PMC1
     pnp_write(0x07, 0x11);
     pnp_write(0x30, 0x01);
+    //
+    // Enable PMC3
+    pnp_write(0x07, 0x17);
+    pnp_write(0x30, 0x01);
 
     // Enable KBC keyboard
     pnp_write(0x07, 0x06);
diff --git a/src/board/system76/galp3-c/pnp.c b/src/board/system76/galp3-c/pnp.c
index c22422f..1146a87 100644
--- a/src/board/system76/galp3-c/pnp.c
+++ b/src/board/system76/galp3-c/pnp.c
@@ -25,9 +25,13 @@ void pnp_write(uint8_t reg, uint8_t data) {
 void pnp_enable() {
     DEBUG("Enable PNP devices\n");
 
-    // Enable PMC
+    // Enable PMC1
     pnp_write(0x07, 0x11);
     pnp_write(0x30, 0x01);
+    //
+    // Enable PMC3
+    pnp_write(0x07, 0x17);
+    pnp_write(0x30, 0x01);
 
     // Enable KBC keyboard
     pnp_write(0x07, 0x06);
diff --git a/src/board/system76/lemp9/pnp.c b/src/board/system76/lemp9/pnp.c
index c22422f..1146a87 100644
--- a/src/board/system76/lemp9/pnp.c
+++ b/src/board/system76/lemp9/pnp.c
@@ -25,9 +25,13 @@ void pnp_write(uint8_t reg, uint8_t data) {
 void pnp_enable() {
     DEBUG("Enable PNP devices\n");
 
-    // Enable PMC
+    // Enable PMC1
     pnp_write(0x07, 0x11);
     pnp_write(0x30, 0x01);
+    //
+    // Enable PMC3
+    pnp_write(0x07, 0x17);
+    pnp_write(0x30, 0x01);
 
     // Enable KBC keyboard
     pnp_write(0x07, 0x06);