diff --git a/Matekiste_Laser_Stencil.scad b/Matekiste_Laser_Stencil.scad
index da577b0..dcb817c 100644
--- a/Matekiste_Laser_Stencil.scad
+++ b/Matekiste_Laser_Stencil.scad
@@ -84,6 +84,18 @@ module round_psu_cable_plane(width, height, hole_size, hole_spacing_x, hole_spac
     }
 }
 
+/*
+ * Base plane with combined cutouts: for PSU and mainboard bearings
+ */
+module round_psu_mainboard_plane(width, height, hole_size, hole_spacing_x, hole_spacing_y, radius, psu_width, psu_height) {
+    difference() {
+        round_psu_plane(width, height, hole_size, hole_spacing_x, hole_spacing_y, radius, psu_width, psu_height);
+        rotate([0, 0, 180])
+        translate([-310, -244])
+        __mainboard_bearings(230, 244);
+    }
+}
+
 /*
  * Base plane with cutouts for two fans in the center
  */
@@ -179,4 +191,46 @@ module __fan_cutout(outer_size, inner_size, bearing_size) {
     rotate([0, 0, 270])
     __radius_cutout(2.5);
     */
+}
+
+module __mainboard_bearings(mainboard_width, mainboard_height) {
+    // measured from a microATX (970M Pro3):
+    // * mainboard_width=230;
+    // * mainboard_height=244;
+    bearing_size=4;
+
+    // bottom row
+    translate([0, 5]) {
+        // inofficial hole added by ASROCK (970M Pro3)
+        // translate([5, 0])
+        // circle(d=bearing_size, $fn=RESOLUTION);
+
+        translate([63, 0])
+        circle(d=bearing_size, $fn=RESOLUTION);
+
+        translate([195, 0])
+        circle(d=bearing_size, $fn=RESOLUTION);
+    }
+
+    // middle row
+    translate([0, mainboard_height-80]) {
+        translate([63, 0])
+        circle(d=bearing_size, $fn=RESOLUTION);
+
+        translate([mainboard_width-10, 0])
+        circle(d=bearing_size, $fn=RESOLUTION);
+    }
+
+    // middle top row
+    translate([63, mainboard_height-14])
+    circle(d=bearing_size, $fn=RESOLUTION);
+
+    // nearly top left hole
+    translate([mainboard_width-10, mainboard_height-34])
+    circle(d=bearing_size, $fn=RESOLUTION);
+
+    // top left hole
+    // inofficial hole added by ASROCK (970M Pro3)
+    // translate([5, mainboard_height-5])
+    // circle(d=bearing_size, $fn=RESOLUTION);
 }
\ No newline at end of file