diff --git a/wpa_supplicant/hidl/1.4/sta_iface.cpp b/wpa_supplicant/hidl/1.4/sta_iface.cpp
index b47c5fa..7f476b1 100644
--- a/wpa_supplicant/hidl/1.4/sta_iface.cpp
+++ b/wpa_supplicant/hidl/1.4/sta_iface.cpp
@@ -35,9 +35,10 @@
 using android::hardware::wifi::supplicant::V1_0::SupplicantStatus;
 using android::hardware::wifi::supplicant::V1_0::SupplicantStatusCode;
 using android::hardware::wifi::supplicant::V1_0::ISupplicantStaNetwork;
-using android::hardware::wifi::supplicant::V1_3::ISupplicantStaIface;
-using android::hardware::wifi::supplicant::V1_3::ConnectionCapabilities;
 using android::hardware::wifi::supplicant::V1_3::WifiTechnology;
+using android::hardware::wifi::supplicant::V1_4::ISupplicantStaIface;
+using android::hardware::wifi::supplicant::V1_4::ConnectionCapabilities;
+using android::hardware::wifi::supplicant::V1_4::LegacyMode;
 using android::hardware::wifi::supplicant::V1_4::implementation::HidlManager;
 
 constexpr uint32_t kMaxAnqpElems = 100;
@@ -765,6 +766,14 @@
 	    &StaIface::getConnectionCapabilitiesInternal, _hidl_cb);
 }
 
+Return<void> StaIface::getConnectionCapabilities_1_4(
+    getConnectionCapabilities_1_4_cb _hidl_cb)
+{
+	return validateAndCall(
+	    this, SupplicantStatusCode::FAILURE_UNKNOWN,
+	    &StaIface::getConnectionCapabilitiesInternal_1_4, _hidl_cb);
+}
+
 SupplicantStatus StaIface::removeNetworkInternal(SupplicantNetworkId id)
 {
 	struct wpa_supplicant *wpa_s = retrieveIfacePtr();
@@ -1421,49 +1430,64 @@
 #endif
 }
 
-std::pair<SupplicantStatus, ConnectionCapabilities>
+std::pair<SupplicantStatus, android::hardware::wifi::supplicant::V1_3::ConnectionCapabilities>
 StaIface::getConnectionCapabilitiesInternal()
 {
+  struct android::hardware::wifi::supplicant::V1_3::ConnectionCapabilities capa;
+	return {{SupplicantStatusCode::FAILURE_UNKNOWN, "deprecated"}, capa};
+}
+
+std::pair<SupplicantStatus, ConnectionCapabilities>
+StaIface::getConnectionCapabilitiesInternal_1_4()
+{
 	struct wpa_supplicant *wpa_s = retrieveIfacePtr();
 	struct ConnectionCapabilities capa;
 
 	if (wpa_s->connection_set) {
+		capa.legacyMode = LegacyMode::UNKNOWN;
 		if (wpa_s->connection_he) {
-			capa.technology = WifiTechnology::HE;
+			capa.V1_3.technology = WifiTechnology::HE;
 		} else if (wpa_s->connection_vht) {
-			capa.technology = WifiTechnology::VHT;
+			capa.V1_3.technology = WifiTechnology::VHT;
 		} else if (wpa_s->connection_ht) {
-			capa.technology = WifiTechnology::HT;
+			capa.V1_3.technology = WifiTechnology::HT;
 		} else {
-			capa.technology = WifiTechnology::LEGACY;
+			capa.V1_3.technology = WifiTechnology::LEGACY;
+			if (wpas_freq_to_band(wpa_s->assoc_freq) == BAND_2_4_GHZ) {
+				capa.legacyMode = (wpa_s->connection_11b_only) ? LegacyMode::B_MODE
+						: LegacyMode::G_MODE; 
+			} else {
+				capa.legacyMode = LegacyMode::A_MODE;
+			}
 		}
 		switch (wpa_s->connection_channel_bandwidth) {
 		case CHAN_WIDTH_20:
-			capa.channelBandwidth = WifiChannelWidthInMhz::WIDTH_20;
+			capa.V1_3.channelBandwidth = WifiChannelWidthInMhz::WIDTH_20;
 			break;
 		case CHAN_WIDTH_40:
-			capa.channelBandwidth = WifiChannelWidthInMhz::WIDTH_40;
+			capa.V1_3.channelBandwidth = WifiChannelWidthInMhz::WIDTH_40;
 			break;
 		case CHAN_WIDTH_80:
-			capa.channelBandwidth = WifiChannelWidthInMhz::WIDTH_80;
+			capa.V1_3.channelBandwidth = WifiChannelWidthInMhz::WIDTH_80;
 			break;
 		case CHAN_WIDTH_160:
-			capa.channelBandwidth = WifiChannelWidthInMhz::WIDTH_160;
+			capa.V1_3.channelBandwidth = WifiChannelWidthInMhz::WIDTH_160;
 			break;
 		case CHAN_WIDTH_80P80:
-			capa.channelBandwidth = WifiChannelWidthInMhz::WIDTH_80P80;
+			capa.V1_3.channelBandwidth = WifiChannelWidthInMhz::WIDTH_80P80;
 			break;
 		default:
-			capa.channelBandwidth = WifiChannelWidthInMhz::WIDTH_20;
+			capa.V1_3.channelBandwidth = WifiChannelWidthInMhz::WIDTH_20;
 			break;
 		}
-		capa.maxNumberRxSpatialStreams = wpa_s->connection_max_nss_rx;
-		capa.maxNumberTxSpatialStreams = wpa_s->connection_max_nss_tx;
+		capa.V1_3.maxNumberRxSpatialStreams = wpa_s->connection_max_nss_rx;
+		capa.V1_3.maxNumberTxSpatialStreams = wpa_s->connection_max_nss_tx;
 	} else {
-		capa.technology = WifiTechnology::UNKNOWN;
-		capa.channelBandwidth = WifiChannelWidthInMhz::WIDTH_20;
-		capa.maxNumberTxSpatialStreams = 1;
-		capa.maxNumberRxSpatialStreams = 1;
+		capa.V1_3.technology = WifiTechnology::UNKNOWN;
+		capa.V1_3.channelBandwidth = WifiChannelWidthInMhz::WIDTH_20;
+		capa.V1_3.maxNumberTxSpatialStreams = 1;
+		capa.V1_3.maxNumberRxSpatialStreams = 1;
+		capa.legacyMode = LegacyMode::UNKNOWN;
 	}
 	return {{SupplicantStatusCode::SUCCESS, ""}, capa};
 }
diff --git a/wpa_supplicant/hidl/1.4/sta_iface.h b/wpa_supplicant/hidl/1.4/sta_iface.h
index 8338459..1b8584d 100644
--- a/wpa_supplicant/hidl/1.4/sta_iface.h
+++ b/wpa_supplicant/hidl/1.4/sta_iface.h
@@ -15,7 +15,7 @@
 
 #include <android-base/macros.h>
 
-#include <android/hardware/wifi/supplicant/1.3/ISupplicantStaIface.h>
+#include <android/hardware/wifi/supplicant/1.4/ISupplicantStaIface.h>
 #include <android/hardware/wifi/supplicant/1.2/ISupplicantStaIfaceCallback.h>
 #include <android/hardware/wifi/supplicant/1.3/ISupplicantStaNetwork.h>
 
@@ -44,7 +44,7 @@
  * object is used for control operations on a specific interface
  * controlled by wpa_supplicant.
  */
-class StaIface : public V1_3::ISupplicantStaIface
+class StaIface : public V1_4::ISupplicantStaIface
 {
 public:
 	StaIface(struct wpa_global* wpa_global, const char ifname[]);
@@ -189,6 +189,8 @@
 	Return<void> stopDppInitiator(stopDppInitiator_cb _hidl_cb) override;
 	Return<void> getConnectionCapabilities(
 	    getConnectionCapabilities_cb _hidl_cb) override;
+	Return<void> getConnectionCapabilities_1_4(
+	    getConnectionCapabilities_1_4_cb _hidl_cb) override;
 	Return<void> getWpaDriverCapabilities(
 	    getWpaDriverCapabilities_cb _hidl_cb) override;
 	Return<void> setMboCellularDataStatus(bool available,
@@ -283,6 +285,8 @@
 			uint32_t own_bootstrap_id);
 	SupplicantStatus stopDppInitiatorInternal();
 	std::pair<SupplicantStatus, V1_3::ConnectionCapabilities> getConnectionCapabilitiesInternal();
+	std::pair<SupplicantStatus, V1_4::ConnectionCapabilities>
+			getConnectionCapabilitiesInternal_1_4();
 	std::pair<SupplicantStatus, uint32_t> getWpaDriverCapabilitiesInternal();
 	SupplicantStatus setMboCellularDataStatusInternal(bool available);
 	std::pair<SupplicantStatus, uint32_t> getKeyMgmtCapabilitiesInternal_1_3();