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diff --git a/Documentation/mainboard/index.md b/Documentation/mainboard/index.md
index e311198f58..f5b4ed8530 100644
--- a/Documentation/mainboard/index.md
+++ b/Documentation/mainboard/index.md
@@ -223,6 +223,7 @@ The boards in this section are not real mainboards, but emulators.
 - [Lemur Pro 9](system76/lemp9.md)
 - [Lemur Pro 10](system76/lemp10.md)
 - [Lemur Pro 11](system76/lemp11.md)
+- [Lemur Pro 12](system76/lemp12.md)
 - [Oryx Pro 5](system76/oryp5.md)
 - [Oryx Pro 6](system76/oryp6.md)
 - [Oryx Pro 7](system76/oryp7.md)
diff --git a/Documentation/mainboard/system76/lemp12.md b/Documentation/mainboard/system76/lemp12.md
new file mode 100644
index 0000000000..55a2e35cc2
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+++ b/Documentation/mainboard/system76/lemp12.md
@@ -0,0 +1,62 @@
+# System76 Lemur Pro 12 (lemp12)
+
+## Specs
+
+- CPU
+  - Intel Core i5-1335U
+  - Intel Core i7-1355U
+- EC
+  - ITE IT5570E running [System76 EC](https://github.com/system76/ec)
+- Graphics
+  - Intel Iris Xe Graphics
+  - eDP 14.0" 1920x1080@60Hz LCD (Innolux N140HCE-EN2)
+  - 1x HDMI 2.1
+  - 1x DisplayPort 1.4 over USB-C
+- Memory
+  - Channel 0: 8-GB onboard DDR5 (Samsung M425R1GB4BB0-CQKOD)
+  - Channel 1: 8/16/32-GB DDR5 SO-DIMM @ 4800 MHz
+- Networking
+  - M.2 NVMe/CNVi WiFi/Bluetooth (Intel Wi-Fi 6 AX210/211)
+- Power
+  - 65W (19V, 3.42A) AC adapter (AcBel ADA012)
+  - USB-C charging, compatible with 65W+ charger
+  - 73Wh 4-cell Lithium-ion battery
+- Sound
+  - Realtek ALC256 codec
+  - Internal speakers and microphone
+  - Combined 3.5 mm headphone/microphone jack
+  - HDMI, USB-C DisplayPort audio
+- Storage
+  - 1x M.2 PCIe NVMe Gen 4 SSD
+  - 1x M.2 PCIe NVMe Gen 3 or SATA 3 SSD
+  - MicroSD card reader (RTS5227S)
+- USB
+  - 1x USB Type-C with Thudnerbolt 4
+  - 1x USB 3.2 Gen 2 Type-A
+  - 1x USB 3.2 Gen 1 Type-A
+- Dimensions
+  - 1.65cm x 32.2cm x 21.68cm, 1.15kg
+
+## Flashing coreboot
+
+```eval_rst
++---------------------+---------------------+
+| Type                | Value               |
++=====================+=====================+
+| Socketed flash      | no                  |
++---------------------+---------------------+
+| Vendor              | Macronix            |
++---------------------+---------------------+
+| Model               | MX25L25673G         |
++---------------------+---------------------+
+| Size                | 32 MiB              |
++---------------------+---------------------+
+| Package             | WSON-8              |
++---------------------+---------------------+
+| Internal flashing   | yes                 |
++---------------------+---------------------+
+| External flashing   | yes                 |
++---------------------+---------------------+
+```
+
+The flash chip (U41) is left of the DIMM slot.