diff --git a/package-lock.json b/package-lock.json
index 94ab9ae..5beed48 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -481,7 +481,7 @@
     },
     "node_modules/@openmouse/protocol": {
       "version": "0.1.0",
-      "resolved": "git+ssh://git@github.com/OpenMouse-Project/mouse-protocol.git#badc8d35b00af881f6ebf9e9a812ffd903b97b76",
+      "resolved": "git+ssh://git@github.com/OpenMouse-Project/mouse-protocol.git#541f39eeb5b2cf5761bb1239e8d825a7052004fe",
       "engines": {
         "node": ">=20"
       }
diff --git a/src/device/controller.ts b/src/device/controller.ts
index af8f51f..1e74c07 100644
--- a/src/device/controller.ts
+++ b/src/device/controller.ts
@@ -118,6 +118,7 @@ import { FinalmouseHidClient } from "@openmouse/protocol/drivers/finalmouse/hid"
 import { ModdoHidClient } from "@openmouse/protocol/drivers/moddo/hid";
 import { NinjutsoHidClient } from "@openmouse/protocol/drivers/ninjutso/hid";
 import { ZaunkoenigHidClient } from "@openmouse/protocol/drivers/zaunkoenig/hid";
+import { CorsairHidClient } from "@openmouse/protocol/drivers/corsair/hid";
 import { TeevolutionHidClient } from "@openmouse/protocol/drivers/teevolution/hid";
 import { teevolutionProfileForCid } from "@openmouse/protocol/teevolution";
 import { VgnF2HidClient } from "@openmouse/protocol/drivers/vgn/hid";
@@ -197,7 +198,7 @@ function activeAs<T>(...classes: ClientClass<T>[]): T | null {
 
 const DM_CLASSES = [WLMouseHidClient, LamzuHidClient, AtkHidClient, AtkBitmouseHidClient, NinjutsoHidClient] as const;
 const RAZER_CLASSES = [RazerHidClient, RazerViperMiniHidClient, RazerViperHidClient, RazerCobraHidClient] as const;
-const NEEDS_OPEN = [TeevolutionHidClient, VgnF2HidClient, KeychronNapeHidClient, KeychronM6HidClient, ModdoHidClient, ZaunkoenigHidClient, FantechHidClient, WallhackMouseHidClient, WallhackKeyboardHidClient, GloriousHidClient, GloriousClassicHidClient, MchoseHidClient, MchoseDockHidClient, MicrosoftHidClient] as const;
+const NEEDS_OPEN = [TeevolutionHidClient, VgnF2HidClient, KeychronNapeHidClient, KeychronM6HidClient, ModdoHidClient, ZaunkoenigHidClient, CorsairHidClient, FantechHidClient, WallhackMouseHidClient, WallhackKeyboardHidClient, GloriousHidClient, GloriousClassicHidClient, MchoseHidClient, MchoseDockHidClient, MicrosoftHidClient] as const;
 const PULSAR_CLASSES = [PulsarHidClient, PulsarProHidClient, PulsarXs1HidClient] as const;
 
 const logitechClient = (): LogitechHidppClient | null => activeAs(LogitechHidppClient);
diff --git a/src/supported-mice.test.ts b/src/supported-mice.test.ts
index ed16676..d178d65 100644
--- a/src/supported-mice.test.ts
+++ b/src/supported-mice.test.ts
@@ -25,6 +25,7 @@ import { PULSAR_XS1_PRODUCT_IDS } from "@openmouse/protocol/pulsar";
 import { RAZER_PRODUCTS } from "@openmouse/protocol/razer-devices";
 import { TEEVOLUTION_PRODUCT_IDS } from "@openmouse/protocol/teevolution";
 import { ZAUNKOENIG_PRODUCT_IDS } from "@openmouse/protocol/zaunkoenig";
+import { CORSAIR_PRODUCT_IDS } from "@openmouse/protocol/corsair";
 
 import { MICE, STATUS, type Mouse, type Status } from "./supported-mice.ts";
 
@@ -97,6 +98,7 @@ const PID_UNIVERSE = new Set<number>([
   ...KEYCHRON_NAPE_PRODUCTS.keys(),
   ...TEEVOLUTION_PRODUCT_IDS,
   ...ZAUNKOENIG_PRODUCT_IDS,
+  ...CORSAIR_PRODUCT_IDS,
   ...NINJUTSO_LEGACY_MOUSE_PRODUCT_IDS,
   ...NINJUTSO_MOUSE_PRODUCT_IDS,
   ...NINJUTSO_LEGACY_RECEIVER_PRODUCT_IDS,
diff --git a/src/supported-mice.ts b/src/supported-mice.ts
index 3364c69..cdd3c3e 100644
--- a/src/supported-mice.ts
+++ b/src/supported-mice.ts
@@ -346,6 +346,9 @@ export const MICE: Mouse[] = [
     note: "DPI presets, polling, LED color, sleep/dim timers, default lighting, and buttons are write-only; battery percentage/charging is read live (no firmware-query command in this protocol). PID 0x184a (wired mode) and 0x1848 (2.4 GHz mode) in SteelSeries Prime Mini Wireless driver" },
 
   // CORSAIR ─────────────────────────────────────────────────────────────
+  { brand: "Corsair", model: "NIGHTSWORD RGB",            status: "supported", req: 1,
+    pids: [0x1b5c],
+    note: "Read-only: identity, firmware, live DPI stages, polling rate, lift-off height, and angle snapping over the 0xffc2/usage-4 feature-report interface (fw 3.41). Close iCUE first — it holds the control interface. PID 0x1b5c in Corsair driver" },
   { brand: "Corsair", model: "Harpoon RGB Pro",           status: "driver",   req: 5,
     note: "iCUE protocol — not implemented" },
   { brand: "Corsair", model: "Katar Pro",                 status: "driver",   req: 4,
diff --git a/src/ui/device-images.test.ts b/src/ui/device-images.test.ts
index 8890709..0ea7907 100644
--- a/src/ui/device-images.test.ts
+++ b/src/ui/device-images.test.ts
@@ -36,6 +36,11 @@ test("Razer Orochi V2 uses its own render over its Atheris receiver", () => {
   assert.equal(deviceImage({ vendorId: 0x1532, productId: 0x0094 } as HIDDevice), CDN + "razer-orochi-v2.png");
 });
 
+test("Corsair NIGHTSWORD RGB falls back to the placeholder until art exists", () => {
+  assert.equal(deviceImage({ vendorId: 0x1b1c, productId: 0x1b5c } as HIDDevice, "Corsair NIGHTSWORD RGB"), CDN + "unknown-device.png");
+  assert.equal(deviceImage(null, "CORSAIR NIGHTSWORD RGB Gaming Mouse"), CDN + "unknown-device.png");
+});
+
 test("fixture previews resolve product art without a HID device", () => {
   assert.equal(deviceImage(null, "CRDRAKO KO-ONE"), CDN + "crdrako-ko-one.png");
   assert.equal(deviceImage(null, "Zaunkoenig M3K"), CDN + "zaunkoenig-m3k.png");
diff --git a/src/ui/device-images.ts b/src/ui/device-images.ts
index f5434ab..4dc50ad 100644
--- a/src/ui/device-images.ts
+++ b/src/ui/device-images.ts
@@ -180,6 +180,9 @@ function resolveDeviceImageFilename(device: HIDDevice | null | undefined, displa
   if (/\bterra\s*pro\b/i.test(displayName)) return "teevolution-terra-pro.png";
   if (/\bm-001\b/i.test(displayName)) return "wallhack-m-001.png";
   if (/\bk-001\b/i.test(displayName)) return "wallhack-k-001.png";
+  // Corsair NIGHTSWORD RGB has no product render yet; resolves to the generic
+  // placeholder until art is uploaded (then add ["1b1c:1b5c", ...] above).
+  if (/\bnightsword\b/i.test(displayName)) return "unknown-device.png";
   // Newer supported-model artwork resolved from the reported product name. These
   // run after the shared-receiver checks above but before the Pulsar/unknown
   // catch-alls. Test-needed (likely) models are deliberately left out.