diff --git a/main/main.c b/main/main.c
index c9a6f92..83d37c7 100755
--- a/main/main.c
+++ b/main/main.c
@@ -78,7 +78,7 @@ void app_main(void)
     // }
     int i = 0;
     while (1) {
-        cdc_printf("hello %d", i++);
+        cdc_printf("hello %d\r\n", i++);
         vTaskDelay(1000 / portTICK_PERIOD_MS);
     }
     printf("Restarting now.\n");
diff --git a/main/utilities/usb_cherry/esp_setup/my_usb_setup.c b/main/utilities/usb_cherry/esp_setup/my_usb_setup.c
index ccfeadb..68af6d9 100644
--- a/main/utilities/usb_cherry/esp_setup/my_usb_setup.c
+++ b/main/utilities/usb_cherry/esp_setup/my_usb_setup.c
@@ -18,14 +18,14 @@
 #define USBD_LANGID_STRING 1033
 
 /*!< config descriptor size */
-#define USB_CONFIG_SIZE (9 + CDC_ACM_DESCRIPTOR_LEN + MSC_DESCRIPTOR_LEN)
+#define USB_CONFIG_SIZE (9 + CDC_ACM_DESCRIPTOR_LEN )// + MSC_DESCRIPTOR_LEN)
 
 /*!< global descriptor */
 static const uint8_t cdc_msc_descriptor[] = {
     USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xEF, 0x02, 0x01, USBD_VID, USBD_PID, 0x0100, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x03, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
+    USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x02, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
     CDC_ACM_DESCRIPTOR_INIT(0x00, CDC_INT_EP, CDC_OUT_EP, CDC_IN_EP, 0x02),
-    MSC_DESCRIPTOR_INIT(0x02, MSC_OUT_EP, MSC_IN_EP, 0x00),
+    // MSC_DESCRIPTOR_INIT(0x02, MSC_OUT_EP, MSC_IN_EP, 0x00),
     ///////////////////////////////////////
     /// string0 descriptor
     ///////////////////////////////////////
@@ -149,7 +149,7 @@ void cdc_acm_msc_init(void)
     usbd_interface_add_endpoint(&cdc_data_intf, &cdc_out_ep);
     usbd_interface_add_endpoint(&cdc_data_intf, &cdc_in_ep);
 
-    usbd_msc_class_init(MSC_OUT_EP, MSC_IN_EP);
+    // usbd_msc_class_init(MSC_OUT_EP, MSC_IN_EP);
 
     usbd_initialize();
 }