diff --git a/config/coreboot/default/patches/0039-fix-sata-ports-on-dell-9020-sff-and-mt.patch b/config/coreboot/default/patches/0039-fix-sata-ports-on-dell-9020-sff-and-mt.patch
new file mode 100644
index 00000000..f4c3939c
--- /dev/null
+++ b/config/coreboot/default/patches/0039-fix-sata-ports-on-dell-9020-sff-and-mt.patch
@@ -0,0 +1,66 @@
+From 4889f08306f1530211dcc6f6a4e999c6cc72f3ac Mon Sep 17 00:00:00 2001
+From: Leah Rowe <info@minifree.org>
+Date: Sat, 30 Mar 2024 05:57:54 +0000
+Subject: [PATCH 1/1] fix sata ports on dell 9020 sff and mt
+
+mate kukri has a patch under review on coreboot that sets
+sata port map to 0x7 on sff and 0xf on mt.
+
+see: intel 8 series pch datasheet, section 13.1.35
+
+basically, the 6 least significant bits enable the sata
+slots; 1 for enable and 0 for disable. there can be up
+to 6 ports. least significant bit is port 0, then next
+is port 1, and so on.
+
+coreboot currently enables ports 0, 1, 4 and 5, making this
+value 0x33 (converted to binary: 00110011). sff has ports
+0, 1 and 2 wired, so mate changed that to 0x7 (00000111).
+
+on mt, the blue ports are ports 0 and 1, but the two white
+ports don't work, but coreboot enables 4 and 5; it is
+likely that the blue ports are in fact 0 and 1, and the
+white ports are 2 and 3, but we've not tested this!
+
+it could be that the blue ports are ports 4 and 5, and
+the white ports are 2 and 3! we have not yet determined
+this, but mate set it to 0xf, meaning ports 0 1 2 and 3
+are enabled, in his patch under review. the chance that
+it's 2, 3, 4 and 5 on the board is unlikely, but it is
+theoretically possible and has not been confirmed.
+
+therefore, for now, i will set the value to 0x3f, which
+in binary is 00111111, thus enabling all 6 slots. the two
+that aren't physically wired don't really matter. enabling
+ports (from the pch) that electrically aren't there and
+then powering on is electrically equivalent to those ports
+being actually being wired, but with no devices plugged
+into them. therefore, 0x3f is an effective shotgun fix.
+
+i'll remove this patch and use mate's fix when the latter
+has been tested on MT; it has already been tested on SFF.
+
+this patch fixes the 3rd sata slot on 9020 sff, and the 3rd
+and 4th sata slots on 9020 MT
+
+Signed-off-by: Leah Rowe <info@minifree.org>
+---
+ src/mainboard/dell/optiplex_9020/devicetree.cb | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/mainboard/dell/optiplex_9020/devicetree.cb b/src/mainboard/dell/optiplex_9020/devicetree.cb
+index c0b17a15ff..7bfa6736a6 100644
+--- a/src/mainboard/dell/optiplex_9020/devicetree.cb
++++ b/src/mainboard/dell/optiplex_9020/devicetree.cb
+@@ -23,7 +23,7 @@ chip northbridge/intel/haswell
+ 			register "gen2_dec" = "0x007c0901"
+ 			register "gen3_dec" = "0x003c07e1"
+ 			register "gen4_dec" = "0x001c0901"
+-			register "sata_port_map" = "0x33"
++			register "sata_port_map" = "0x3f"
+ 
+ 			device pci 14.0 on  end				# xHCI controller
+ 			device pci 16.0 on  end				# Management Engine interface 1
+-- 
+2.39.2
+