diff --git a/class/vendor/usbh_air724.c b/class/vendor/usbh_air724.c
new file mode 100644
index 00000000..cdf84b1c
--- /dev/null
+++ b/class/vendor/usbh_air724.c
@@ -0,0 +1,92 @@
+#include "usbh_core.h"
+
+#define DEV_FORMAT "/dev/air724"
+
+static uint32_t g_devinuse = 0;
+
+struct usbh_cdc_custom_air724 {
+    struct usbh_hubport *hport;
+
+    usbh_epinfo_t bulkin;  /* Bulk IN endpoint */
+    usbh_epinfo_t bulkout; /* Bulk OUT endpoint */
+};
+
+int usbh_air724_connect(struct usbh_hubport *hport, uint8_t intf)
+{
+    struct usbh_endpoint_cfg ep_cfg = { 0 };
+    struct usb_endpoint_descriptor *ep_desc;
+    int ret;
+
+    if (intf != 3) {
+        USB_LOG_WRN("ignore intf:%d\r\n", intf);
+        return 0;
+    }
+    struct usbh_cdc_custom_air724 *cdc_custom_class = usb_malloc(sizeof(struct usbh_cdc_custom_air724));
+    if (cdc_custom_class == NULL) {
+        USB_LOG_ERR("Fail to alloc cdc_custom_class\r\n");
+        return -ENOMEM;
+    }
+
+    memset(cdc_custom_class, 0, sizeof(struct usbh_cdc_custom_air724));
+    cdc_custom_class->hport = hport;
+
+    strncpy(hport->config.intf[intf].devname, DEV_FORMAT, CONFIG_USBHOST_DEV_NAMELEN);
+
+    hport->config.intf[intf].priv = cdc_custom_class;
+
+    for (uint8_t i = 0; i < hport->config.intf[intf].intf_desc.bNumEndpoints; i++) {
+        ep_desc = &hport->config.intf[intf].ep[i].ep_desc;
+
+        ep_cfg.ep_addr = ep_desc->bEndpointAddress;
+        ep_cfg.ep_type = ep_desc->bmAttributes & USB_ENDPOINT_TYPE_MASK;
+        ep_cfg.ep_mps = ep_desc->wMaxPacketSize;
+        ep_cfg.ep_interval = ep_desc->bInterval;
+        ep_cfg.hport = hport;
+        if (ep_desc->bEndpointAddress & 0x80) {
+            usbh_ep_alloc(&cdc_custom_class->bulkin, &ep_cfg);
+        } else {
+            usbh_ep_alloc(&cdc_custom_class->bulkout, &ep_cfg);
+        }
+    }
+
+    USB_LOG_INFO("Register air724 Class:%s\r\n", hport->config.intf[intf].devname);
+    uint8_t cdc_buffer[32] = {0X41,0X54,0x0d,0x0a};
+    ret = usbh_ep_bulk_transfer(cdc_custom_class->bulkout, cdc_buffer, 4, 3000);
+    if (ret < 0) {
+        USB_LOG_ERR("bulk out error,ret:%d\r\n", ret);
+    } else {
+        USB_LOG_RAW("send over:%d\r\n", ret);
+    }
+    ret = usbh_ep_bulk_transfer(cdc_custom_class->bulkin, cdc_buffer, 10, 3000);
+    if (ret < 0) {
+        USB_LOG_ERR("bulk in error,ret:%d\r\n", ret);
+    } else {
+        USB_LOG_RAW("recv over:%d\r\n", ret);
+        for (size_t i = 0; i < ret; i++) {
+            USB_LOG_RAW("0x%02x ", cdc_buffer[i]);
+        }
+    }
+
+    return ret;
+}
+
+int usbh_air724_disconnect(struct usbh_hubport *hport, uint8_t intf)
+{
+    return 0;
+}
+
+const struct usbh_class_driver cdc_custom_class_driver = {
+    .driver_name = "cdc_acm",
+    .connect = usbh_air724_connect,
+    .disconnect = usbh_air724_disconnect
+};
+
+CLASS_INFO_DEFINE const struct usbh_class_info cdc_custom_class_info = {
+    .match_flags = USB_CLASS_MATCH_INTF_CLASS | USB_CLASS_MATCH_INTF_SUBCLASS | USB_CLASS_MATCH_INTF_PROTOCOL,
+    .class = 0xff,
+    .subclass = 0,
+    .protocol = 0,
+    .vid = 0x1782,
+    .pid = 0x4e00,
+    .class_driver = &cdc_custom_class_driver
+};