diff --git a/src/bt.cpp b/src/bt.cpp
index 3372c4c..eb14abd 100644
--- a/src/bt.cpp
+++ b/src/bt.cpp
@@ -36,6 +36,7 @@ static hci_con_handle_t acl_handle = HCI_CON_HANDLE_INVALID;
 static uint16_t hid_control_cid;
 static uint16_t hid_interrupt_cid;
 static bt_data_callback_t bt_data_callback = nullptr;
+static bool check_dse = false;
 unordered_map<uint8_t, vector<uint8_t> > feature_data;
 queue_t send_fifo;
 
@@ -337,6 +338,15 @@ static void l2cap_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t
                 bt_disconnect();
             }
         } else if (channel == hid_control_cid) {
+            if (check_dse) {
+                check_dse = false;
+                if (packet[0] == 0x02) {
+                    is_dse = false;
+                }else if (size > 1){
+                    is_dse = true;
+                }
+                tud_connect();
+            }
             if (packet[0] == 0xA3) {
                 uint8_t report_id = packet[1];
                 feature_data[report_id].assign(packet + 1, packet + size);
@@ -396,7 +406,7 @@ static void l2cap_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t
                     memcpy(report32 + 2, packet_0x10, sizeof(packet_0x10));
                     bt_write(report32, sizeof(report32));
 
-                    tud_connect();
+                    // tud_connect();
                 } else {
                     printf("[L2CAP] Unknown Channel psm: 0x%02X", psm);
                 }
@@ -518,4 +528,9 @@ void init_feature() {
     get_feature_data(0x20, 64);
     get_feature_data(0x22, 64);
     get_feature_data(0x05, 41);
+    // DSE
+    // check DSE by request 0x70 feature report. DSE return DEFAULT
+    // If len == 1, it's DS5
+    check_dse = true;
+    get_feature_data(0x70, 64);
 }
diff --git a/src/config.cpp b/src/config.cpp
index c1974e4..9e71b8c 100644
--- a/src/config.cpp
+++ b/src/config.cpp
@@ -74,8 +74,8 @@ void config_valid() {
         body->haptics_buffer_length = 64;
         printf("[Config] haptics_buffer_length is invalid\n");
     }
-    if (body->controller_mode > 1) {
-        body->controller_mode = 0;
+    if (body->controller_mode > 2) {
+        body->controller_mode = 2;
         printf("[Config] controller_mode is invalid\n");
     }
 }
diff --git a/src/config.h b/src/config.h
index edca21d..7c21b55 100644
--- a/src/config.h
+++ b/src/config.h
@@ -15,7 +15,7 @@ struct __attribute__((packed)) Config_body {
     uint8_t disable_pico_led; // bool
     uint8_t polling_rate_mode; // 0: 250Hz, 1: 500Hz, 2: real-time
     uint8_t haptics_buffer_length; // [16,128]
-    uint8_t controller_mode; // 0: DS5, 1: DSE 自动切换识别太麻烦了，懒的做了，期待pr
+    uint8_t controller_mode; // 0: DS5, 1: DSE, 2: Auto
 };
 
 struct __attribute__((packed)) Config {
@@ -33,5 +33,6 @@ const Config_body& get_config();
 void set_config(const uint8_t *new_config, const uint16_t len);
 void config_valid();
 void set_config(const Config_body &new_config);
+static bool is_dse = false;
 
 #endif //DS5_BRIDGE_CONFIG_H
diff --git a/src/usb_descriptors.cpp b/src/usb_descriptors.cpp
index 2f4a073..c41be18 100644
--- a/src/usb_descriptors.cpp
+++ b/src/usb_descriptors.cpp
@@ -28,6 +28,9 @@
 #include "config.h"
 
 bool ds_mode() {
+    if (get_config().controller_mode == 2) {
+        return !is_dse;
+    }
     return get_config().controller_mode == 0;
 }