diff --git a/keyboards/steelseries/prime/board.h b/keyboards/steelseries/prime/board.h
new file mode 100644
index 000000000000..edb9e1072c33
--- /dev/null
+++ b/keyboards/steelseries/prime/board.h
@@ -0,0 +1,9 @@
+// Copyright 2024 Dasky (@daskygit)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include_next <board.h>
+
+#undef STM32_HSECLK
+#define STM32_HSECLK 12000000
diff --git a/keyboards/steelseries/prime/config.h b/keyboards/steelseries/prime/config.h
new file mode 100644
index 000000000000..2e041f4a46da
--- /dev/null
+++ b/keyboards/steelseries/prime/config.h
@@ -0,0 +1,23 @@
+// Copyright 2024 Dasky (@daskygit)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#define POINTING_DEVICE_CS_PIN A4
+#define POINTING_DEVICE_MOTION_PIN B0
+#define POINTING_DEVICE_TASK_THROTTLE_MS 1
+
+#define SPI_DRIVER SPID1
+#define SPI_SCK_PIN A5
+#define SPI_MOSI_PIN A7
+#define SPI_MISO_PIN A6
+
+#define RGB_PWM_DRIVER PWMD1
+#define RGB_BLUE_PIN A10
+#define RGB_BLUE_PWM_CHANNEL 3
+#define RGB_GREEN_PIN A8
+#define RGB_GREEN_PWM_CHANNEL 1
+#define RGB_RED_PIN A9
+#define RGB_RED_PWM_CHANNEL 2
+
+#define OPTICAL_SW_PWR A2
diff --git a/keyboards/steelseries/prime/halconf.h b/keyboards/steelseries/prime/halconf.h
new file mode 100644
index 000000000000..e1498a877a30
--- /dev/null
+++ b/keyboards/steelseries/prime/halconf.h
@@ -0,0 +1,9 @@
+// Copyright 2024 Dasky (@daskygit)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#define HAL_USE_SPI TRUE
+#define HAL_USE_PWM TRUE
+
+#include_next <halconf.h>
diff --git a/keyboards/steelseries/prime/keyboard.json b/keyboards/steelseries/prime/keyboard.json
new file mode 100644
index 000000000000..539c0c3d04bd
--- /dev/null
+++ b/keyboards/steelseries/prime/keyboard.json
@@ -0,0 +1,58 @@
+{
+    "manufacturer": "SteelSeries",
+    "keyboard_name": "Prime+",
+    "maintainer": "Dasky",
+    "bootloader": "uf2boot",
+    "build": {
+        "debounce_type": "asym_eager_defer_pk",
+        "lto": true
+    },
+    "encoder": {
+        "rotary": [
+            {"pin_a": "B5", "pin_b": "B4", "resolution": 2}
+        ]
+    },
+    "features": {
+        "bootmagic": true,
+        "encoder": true,
+        "extrakey": true,
+        "mousekey": true,
+        "pointing_device": true,
+        "rgblight": true
+    },
+    "matrix_pins": {
+        "direct": [
+            ["A0", "C15", "A1", "C13", "C14", "A3"]
+        ]
+    },
+    "processor": "STM32F103",
+    "rgblight": {
+        "animations": {
+            "breathing": true,
+            "rainbow_mood": true
+        },
+        "default": {
+            "animation": "rainbow_mood"
+        },
+        "driver": "custom",
+        "led_count": 1
+    },
+    "url": "https://steelseries.com/gaming-mice/prime",
+    "usb": {
+        "device_version": "1.0.0",
+        "pid": "0x0000",
+        "vid": "0xFEED"
+    },
+    "layouts": {
+        "LAYOUT": {
+            "layout": [
+                {"matrix": [0, 0], "x": 0, "y": 0},
+                {"matrix": [0, 1], "x": 1, "y": 0},
+                {"matrix": [0, 2], "x": 2, "y": 0},
+                {"matrix": [0, 3], "x": 0, "y": 1},
+                {"matrix": [0, 4], "x": 0, "y": 2},
+                {"matrix": [0, 5], "x": 2, "y": 2}
+            ]
+        }
+    }
+}
diff --git a/keyboards/steelseries/prime/keymaps/default/keymap.c b/keyboards/steelseries/prime/keymaps/default/keymap.c
new file mode 100644
index 000000000000..803f6b47daa4
--- /dev/null
+++ b/keyboards/steelseries/prime/keymaps/default/keymap.c
@@ -0,0 +1,29 @@
+// Copyright 2024 Dasky (@daskygit)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include QMK_KEYBOARD_H
+
+// clang-format off
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    // Left, Middle, Right,
+    // Forward
+    // Back
+    // Underneath
+    [0] = LAYOUT(
+        MS_BTN1, MS_BTN3, MS_BTN2,
+        MS_BTN5,
+        MS_BTN4,
+        QK_BOOT
+    )
+};
+// clang-format on
+
+void pointing_device_init_kb(void) {
+    pointing_device_set_cpi(1600);
+}
+
+#if defined(ENCODER_MAP_ENABLE)
+const uint16_t PROGMEM encoder_map[][NUM_ENCODERS][NUM_DIRECTIONS] = {
+    [0] = {ENCODER_CCW_CW(MS_WHLU, MS_WHLD)},
+};
+#endif
diff --git a/keyboards/steelseries/prime/keymaps/default/rules.mk b/keyboards/steelseries/prime/keymaps/default/rules.mk
new file mode 100644
index 000000000000..ee325681483f
--- /dev/null
+++ b/keyboards/steelseries/prime/keymaps/default/rules.mk
@@ -0,0 +1 @@
+ENCODER_MAP_ENABLE = yes
diff --git a/keyboards/steelseries/prime/mcuconf.h b/keyboards/steelseries/prime/mcuconf.h
new file mode 100644
index 000000000000..fee1c8be2cb2
--- /dev/null
+++ b/keyboards/steelseries/prime/mcuconf.h
@@ -0,0 +1,18 @@
+// Copyright 2024 Dasky (@daskygit)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include_next <mcuconf.h>
+
+##undef STM32_I2C_USE_I2C1
+##define STM32_I2C_USE_I2C1 TRUE
+
+#undef STM32_PWM_USE_TIM1
+#define STM32_PWM_USE_TIM1 TRUE
+
+#undef STM32_SPI_USE_SPI1
+#define STM32_SPI_USE_SPI1 TRUE
+
+#undef STM32_PLLMUL_VALUE
+#define STM32_PLLMUL_VALUE 6
diff --git a/keyboards/steelseries/prime/prime.c b/keyboards/steelseries/prime/prime.c
new file mode 100644
index 000000000000..11c528eea830
--- /dev/null
+++ b/keyboards/steelseries/prime/prime.c
@@ -0,0 +1,16 @@
+// Copyright 2024 Dasky (@daskygit)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "quantum.h"
+
+
+void board_init(void) {
+
+    gpio_set_pin_output(A15);
+    gpio_write_pin_high(A15); // Activate D+ pullup
+
+    gpio_set_pin_output(OPTICAL_SW_PWR);
+    gpio_write_pin_low(OPTICAL_SW_PWR); // Enable power for optical switches
+
+}
+
diff --git a/keyboards/steelseries/prime/readme.md b/keyboards/steelseries/prime/readme.md
new file mode 100644
index 000000000000..a55742f1f183
--- /dev/null
+++ b/keyboards/steelseries/prime/readme.md
@@ -0,0 +1,28 @@
+# SteelSeries Prime
+
+![Prime+](https://i.imgur.com/QhNHmwxh.png)
+
+This firmware does not support the dedicated lift off sensor.
+
+Erase with an stlink and flash this [uf2boot bootloader](https://github.com/daskygit/uf2-prime-plus), this is a a one way procedure voiding any warranty so be sure you don't want to use the original manufacturers firmware.
+
+* Keyboard Maintainer: [Dasky](https://github.com/daskygit)
+* Hardware Supported: SteelSeries Prime+
+* Hardware Availability: https://steelseries.com/gaming-mice/prime
+
+Make example for this keyboard (after setting up your build environment):
+
+    make steelseries/prime:default
+
+Flashing example for this keyboard:
+
+    make steelseries/prime:default:flash
+
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).
+
+## Bootloader
+
+Enter the bootloader in 2 ways:
+
+* **Bootmagic reset**: Hold down left mouse button and plug in.
+* **Bootloader entry**: Hold the underneath button while plugging in.
diff --git a/keyboards/steelseries/prime/rgblight_custom.c b/keyboards/steelseries/prime/rgblight_custom.c
new file mode 100644
index 000000000000..273605258748
--- /dev/null
+++ b/keyboards/steelseries/prime/rgblight_custom.c
@@ -0,0 +1,65 @@
+// Copyright 2024 Dasky (@daskygit)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <hal.h>
+#include "chibios_config.h"
+#include "gpio.h"
+#include "color.h"
+#include "rgblight_drivers.h"
+
+static PWMConfig pwmCFG = {
+    .frequency = 0xFFFF,
+    .period    = 256,
+};
+
+rgb_t prime_leds[RGBLIGHT_LED_COUNT];
+
+void init_custom(void) {
+    palSetPadMode(PAL_PORT(RGB_RED_PIN), PAL_PAD(RGB_RED_PIN), PAL_MODE_ALTERNATE_PUSHPULL);
+    palSetPadMode(PAL_PORT(RGB_GREEN_PIN), PAL_PAD(RGB_GREEN_PIN), PAL_MODE_ALTERNATE_PUSHPULL);
+    palSetPadMode(PAL_PORT(RGB_BLUE_PIN), PAL_PAD(RGB_BLUE_PIN), PAL_MODE_ALTERNATE_PUSHPULL);
+    pwmCFG.channels[RGB_RED_PWM_CHANNEL - 1].mode   = PWM_OUTPUT_ACTIVE_HIGH;
+    pwmCFG.channels[RGB_GREEN_PWM_CHANNEL - 1].mode = PWM_OUTPUT_ACTIVE_HIGH;
+    pwmCFG.channels[RGB_BLUE_PWM_CHANNEL - 1].mode  = PWM_OUTPUT_ACTIVE_HIGH;
+    pwmStart(&RGB_PWM_DRIVER, &pwmCFG);
+}
+
+void set_color_custom(int index, uint8_t red, uint8_t green, uint8_t blue) {
+    prime_leds[index].r = red;
+    prime_leds[index].g = green;
+    prime_leds[index].b = blue;
+}
+
+void set_color_all_custom(uint8_t red, uint8_t green, uint8_t blue) {
+    for (int i = 0; i < RGBLIGHT_LED_COUNT; i++) {
+        set_color_custom(i, red, green, blue);
+    }
+}
+
+void flush_custom(void) {
+    if (prime_leds[0].r == 0) {
+        pwmDisableChannel(&RGB_PWM_DRIVER, RGB_RED_PWM_CHANNEL - 1);
+    } else {
+        uint32_t duty = ((uint32_t)0xFFFF * prime_leds[0].r) / 0xFF;
+        pwmEnableChannel(&RGB_PWM_DRIVER, RGB_RED_PWM_CHANNEL - 1, PWM_FRACTION_TO_WIDTH(&RGB_PWM_DRIVER, 0xFFFF, duty));
+    }
+    if (prime_leds[0].g == 0) {
+        pwmDisableChannel(&RGB_PWM_DRIVER, RGB_GREEN_PWM_CHANNEL - 1);
+    } else {
+        uint32_t duty = ((uint32_t)0xFFFF * prime_leds[0].g) / 0xFF;
+        pwmEnableChannel(&RGB_PWM_DRIVER, RGB_GREEN_PWM_CHANNEL - 1, PWM_FRACTION_TO_WIDTH(&RGB_PWM_DRIVER, 0xFFFF, duty));
+    }
+    if (prime_leds[0].b == 0) {
+        pwmDisableChannel(&RGB_PWM_DRIVER, RGB_BLUE_PWM_CHANNEL - 1);
+    } else {
+        uint32_t duty = ((uint32_t)0xFFFF * prime_leds[0].b) / 0xFF;
+        pwmEnableChannel(&RGB_PWM_DRIVER, RGB_BLUE_PWM_CHANNEL - 1, PWM_FRACTION_TO_WIDTH(&RGB_PWM_DRIVER, 0xFFFF, duty));
+    }
+}
+
+const rgblight_driver_t rgblight_driver = {
+    .init          = init_custom,
+    .set_color     = set_color_custom,
+    .set_color_all = set_color_all_custom,
+    .flush         = flush_custom,
+};
diff --git a/keyboards/steelseries/prime/rules.mk b/keyboards/steelseries/prime/rules.mk
new file mode 100644
index 000000000000..5ab86b1b6938
--- /dev/null
+++ b/keyboards/steelseries/prime/rules.mk
@@ -0,0 +1,5 @@
+MCU_LDSCRIPT = STM32F103xB_uf2boot
+
+POINTING_DEVICE_DRIVER = pmw3389
+
+SRC += rgblight_custom.c
diff --git a/lib/chibios b/lib/chibios
index 9dd6eaf669e8..be44b3305f9a 160000
--- a/lib/chibios
+++ b/lib/chibios
@@ -1 +1 @@
-Subproject commit 9dd6eaf669e83eb9d5aaabe736ecfdf2f790a9fd
+Subproject commit be44b3305f9a9fe5f2f49a4e7b978db322dc463e
diff --git a/lib/chibios-contrib b/lib/chibios-contrib
index b643aad980d0..77cb0a4f7589 160000
--- a/lib/chibios-contrib
+++ b/lib/chibios-contrib
@@ -1 +1 @@
-Subproject commit b643aad980d061021565c55745925c2cde4a3c6f
+Subproject commit 77cb0a4f7589f89e724f5e6ecb1d76d514dd1212