diff --git a/libwvdrmengine/oemcrypto/test/oec_device_features.cpp b/libwvdrmengine/oemcrypto/test/oec_device_features.cpp
index 4023081d..9db9c007 100644
--- a/libwvdrmengine/oemcrypto/test/oec_device_features.cpp
+++ b/libwvdrmengine/oemcrypto/test/oec_device_features.cpp
@@ -63,6 +63,10 @@ void DeviceFeatures::Initialize() {
        OEMCrypto_Generic_Encrypt(session, buffer, 0, iv,
                                  OEMCrypto_AES_CBC_128_NO_PADDING, buffer));
   printf("generic_crypto = %s.\n", generic_crypto ? "true" : "false");
+  supports_cas =
+      (OEMCrypto_ERROR_NOT_IMPLEMENTED !=
+       OEMCrypto_LoadCasECMKeys(session, nullptr, 0, nullptr, nullptr));
+  printf("supports_cas = %s.\n", supports_cas ? "true" : "false");
   OEMCrypto_CloseSession(session);
   api_version = OEMCrypto_APIVersion();
   printf("api_version = %u.\n", api_version);
@@ -137,6 +141,7 @@ std::string DeviceFeatures::RestrictFilter(const std::string& initial_filter) {
                                       FilterOut(&filter, "OEMCryptoLoadsCert*");
   if (!generic_crypto)                FilterOut(&filter, "*GenericCrypto*");
   if (!cast_receiver)                 FilterOut(&filter, "*CastReceiver*");
+  if (!supports_cas)                  FilterOut(&filter, "*CasOnly*");
   if (derive_key_method == NO_METHOD) FilterOut(&filter, "*SessionTest*");
   if (provisioning_method
       != OEMCrypto_OEMCertificate)    FilterOut(&filter, "*Prov30*");
diff --git a/libwvdrmengine/oemcrypto/test/oec_device_features.h b/libwvdrmengine/oemcrypto/test/oec_device_features.h
index 06c7b587..a65eef19 100644
--- a/libwvdrmengine/oemcrypto/test/oec_device_features.h
+++ b/libwvdrmengine/oemcrypto/test/oec_device_features.h
@@ -51,6 +51,7 @@ class DeviceFeatures {
   uint32_t resource_rating;  // Device's resource rating tier.
   bool supports_crc;         // Supported decrypt hash type CRC.
   bool test_secure_buffers;  // If we can create a secure buffer for testing.
+  bool supports_cas;         // Device supports CAS (Condition Access System).
   uint32_t api_version;
   OEMCrypto_ProvisioningMethod provisioning_method;