diff --git a/Cargo.lock b/Cargo.lock
index 088382e..f10751a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -859,7 +859,7 @@ dependencies = [
 [[package]]
 name = "nvme-mi-dev"
 version = "0.1.0"
-source = "git+https://github.com/CodeConstruct/nvme-mi-dev?branch=main#421cd454dc53763d991df0fe748965ea07002527"
+source = "git+https://github.com/CodeConstruct/nvme-mi-dev?branch=main#8b38ed3ab4e7189e7ed667a662fbd191d0a80e4b"
 dependencies = [
  "crc",
  "deku 0.19.1 (git+https://github.com/sharksforarms/deku.git?rev=e5363bc11e123bfcfd3467a2a90aeef8b588f432)",
diff --git a/src/main.rs b/src/main.rs
index 339ff50..5871dca 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -220,8 +220,30 @@ async fn nvme_mi(router: &Router<'_>) -> std::io::Result<()> {
         };
 
         debug!("Handling NVMe-MI message: {msg:x?}");
-        mep.handle_async(&mut subsys, msg, ic, resp, async |_| {
-            Err(CommandEffectError::Unsupported)
+        mep.handle_async(&mut subsys, msg, ic, resp, async |ce| match ce {
+            nvme_mi_dev::CommandEffect::SetMtu { port_id, mtus } => {
+                if port_id != twpid {
+                    warn!("NVMe-MI: Bad Port ID for Set MTU: {port_id:?}");
+                    return Err(CommandEffectError::InternalError);
+                }
+
+                if mtus != 64 {
+                    warn!("NVMe-MI: Application lacks support for MTU ({mtus}) != BTU (64)");
+                    return Err(CommandEffectError::Unsupported);
+                }
+
+                Ok(())
+            }
+            nvme_mi_dev::CommandEffect::SetSmbusFreq { port_id: _, freq } => {
+                use nvme_mi_dev::nvme::mi::SmbusFrequency;
+
+                if freq != SmbusFrequency::Freq100Khz {
+                    warn!("NVMe-MI: Application lacks support for I2C bus frequency {:?}", freq);
+                    return Err(CommandEffectError::Unsupported);
+                }
+
+                Ok(())
+            }
         })
         .await;
     }