diff --git a/minadbd/transport_usb.c b/minadbd/transport_usb.c
new file mode 100644
index 0000000..ee6b637
--- /dev/null
+++ b/minadbd/transport_usb.c
@@ -0,0 +1,148 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <sysdeps.h>
+
+#define  TRACE_TAG  TRACE_TRANSPORT
+#include "adb.h"
+
+#if ADB_HOST
+#include "usb_vendors.h"
+#endif
+
+#ifdef HAVE_BIG_ENDIAN
+#define H4(x)	(((x) & 0xFF000000) >> 24) | (((x) & 0x00FF0000) >> 8) | (((x) & 0x0000FF00) << 8) | (((x) & 0x000000FF) << 24)
+static inline void fix_endians(apacket *p)
+{
+    p->msg.command     = H4(p->msg.command);
+    p->msg.arg0        = H4(p->msg.arg0);
+    p->msg.arg1        = H4(p->msg.arg1);
+    p->msg.data_length = H4(p->msg.data_length);
+    p->msg.data_check  = H4(p->msg.data_check);
+    p->msg.magic       = H4(p->msg.magic);
+}
+unsigned host_to_le32(unsigned n)
+{
+    return H4(n);
+}
+#else
+#define fix_endians(p) do {} while (0)
+unsigned host_to_le32(unsigned n)
+{
+    return n;
+}
+#endif
+
+static int remote_read(apacket *p, atransport *t)
+{
+    if(usb_read(t->usb, &p->msg, sizeof(amessage))){
+        D("remote usb: read terminated (message)\n");
+        return -1;
+    }
+
+    fix_endians(p);
+
+    if(check_header(p)) {
+        D("remote usb: check_header failed\n");
+        return -1;
+    }
+
+    if(p->msg.data_length) {
+        if(usb_read(t->usb, p->data, p->msg.data_length)){
+            D("remote usb: terminated (data)\n");
+            return -1;
+        }
+    }
+
+    if(check_data(p)) {
+        D("remote usb: check_data failed\n");
+        return -1;
+    }
+
+    return 0;
+}
+
+static int remote_write(apacket *p, atransport *t)
+{
+    unsigned size = p->msg.data_length;
+
+    fix_endians(p);
+
+    if(usb_write(t->usb, &p->msg, sizeof(amessage))) {
+        D("remote usb: 1 - write terminated\n");
+        return -1;
+    }
+    if(p->msg.data_length == 0) return 0;
+    if(usb_write(t->usb, &p->data, size)) {
+        D("remote usb: 2 - write terminated\n");
+        return -1;
+    }
+
+    return 0;
+}
+
+static void remote_close(atransport *t)
+{
+    usb_close(t->usb);
+    t->usb = 0;
+}
+
+static void remote_kick(atransport *t)
+{
+    usb_kick(t->usb);
+}
+
+void init_usb_transport(atransport *t, usb_handle *h, int state)
+{
+    D("transport: usb\n");
+    t->close = remote_close;
+    t->kick = remote_kick;
+    t->read_from_remote = remote_read;
+    t->write_to_remote = remote_write;
+    t->sync_token = 1;
+    t->connection_state = state;
+    t->type = kTransportUsb;
+    t->usb = h;
+
+#if ADB_HOST
+    HOST = 1;
+#else
+    HOST = 0;
+#endif
+}
+
+#if ADB_HOST
+int is_adb_interface(int vid, int pid, int usb_class, int usb_subclass, int usb_protocol)
+{
+    unsigned i;
+    for (i = 0; i < vendorIdCount; i++) {
+        if (vid == vendorIds[i]) {
+            if (usb_class == ADB_CLASS && usb_subclass == ADB_SUBCLASS &&
+                    usb_protocol == ADB_PROTOCOL) {
+                return 1;
+            }
+
+            return 0;
+        }
+    }
+
+    return 0;
+}
+#endif