diff --git a/apps/web/src/SetupWizard.tsx b/apps/web/src/SetupWizard.tsx
index 3eb600a..6c656d4 100644
--- a/apps/web/src/SetupWizard.tsx
+++ b/apps/web/src/SetupWizard.tsx
@@ -603,6 +603,15 @@ function DeviceForm({
             // sections below (a relay setting and an input setting, respectively), so
             // skip them here to avoid rendering them twice. See OutputEditor/InputEditor.
             .filter((f) => !(isController && (f.key === "pulseMs" || f.key === "inputRestingHigh")))
+            // Printer transport is exclusive: when Connection = USB the network fields
+            // (host/port/status-page) don't apply, and vice-versa the USB device path
+            // doesn't. Hide the irrelevant side so the form can't mislead (e.g. a USB
+            // path lingering under a Network printer). Driven by config.transport.
+            .filter((f) => {
+              const transport = String(config.transport ?? "tcp-ip");
+              if (transport === "usb") return !["host", "port", "httpPort"].includes(f.key);
+              return f.key !== "devicePath";
+            })
             .map((f) =>
             f.type === "boolean" ? (
               // Boolean config field → a real checkbox (stores a true/false boolean, not