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1 files changed, 6 insertions, 0 deletions

diff --git a/examples/rp/src/bin/usb_raw.rs b/examples/rp/src/bin/usb_raw.rs
index e0e5daa54..044e728a0 100644
--- a/examples/rp/src/bin/usb_raw.rs
+++ b/examples/rp/src/bin/usb_raw.rs
@@ -70,6 +70,12 @@ async fn main(_spawner: Spawner) {
         &mut control_buf,
     );
 
+    // Add the Microsoft OS Descriptor (MSOS/MOD) descriptor.
+    // We tell Windows that this entire device is compatible with the "WINUSB" feature,
+    // which causes it to use the built-in WinUSB driver automatically, which in turn
+    // can be used by libusb/rusb software without needing a custom driver or INF file.
+    // In principle you might want to call msos_feature() just on a specific function,
+    // if your device also has other functions that still use standard class drivers.
     builder.msos_descriptor(windows_version::WIN8_1, 0);
     builder.msos_feature(msos::CompatibleIdFeatureDescriptor::new("WINUSB", ""));
     builder.msos_feature(msos::RegistryPropertyFeatureDescriptor::new(