diff --git a/Documentation/NuttxPortingGuide.html b/Documentation/NuttxPortingGuide.html
index 091afedba95..c8eaa532e98 100644
--- a/Documentation/NuttxPortingGuide.html
+++ b/Documentation/NuttxPortingGuide.html
@@ -16,7 +16,7 @@
   </b></big></h1>
   <p><small>by</small></p>
   <p>Gregory Nutt</p>
-  <p><small>Last Update: October 9, 2008</small></p>
+  <p><small>Last Update: October 22, 2008</small></p>
 </center>
 
 <center><h1>Table of Contents</h1></center>
@@ -1678,6 +1678,40 @@ The system can be re-made subsequently by just typing <code>make</code>.
   </li>
 </ul>
 
+<h3>USB Storage Device Configuration</h3>
+<ul>
+  <li>
+    <code>CONFIG_USBSTRG_EP0MAXPACKET</code>:
+    Max packet size for endpoint 0
+  </li>
+  <li>
+    <code>CONFIG_USBSTRGEPBULKOUT</code> and <code>CONFIG_USBSTRG_EPBULKIN</code>:
+    The logical 7-bit address of a hardware endpoints that support bulk OUT and IN operations
+  </li>
+  <li>
+    <code>CONFIG_USBSTRG_NWRREQS</code> and <code>CONFIG_USBSTRG_NRDREQS</code>:
+    The number of write/read requests that can be in flight
+  </li>
+  <li>
+    <code>CONFIG_USBSTRG_BULKINREQLEN</code> and <code>CONFIG_USBSTRG_BULKOUTREQLEN</code>:
+    The size of the buffer in each write/read request.
+    This value needs to be at least as large as the endpoint maxpacket and
+    ideally as large as a block device sector.
+  </li>
+  <li>
+    <code>CONFIG_USBSTRG_VENDORID</code> and <code>CONFIG_USBSTRG_VENDORSTR</code>:
+    The vendor ID code/string
+  </li>
+  <li>
+    <code>CONFIG_USBSTRG_PRODUCTID</code> and <code>CONFIG_USBSTRG_PRODUCTSTR</code>:
+    The product ID code/string
+  </li>
+  <li>
+    <code>CONFIG_USBSTRG_REMOVABLE</code>:
+    Select if the media is removable
+  </li>
+</ul>
+
 <h2>Stack and heap information</h2>
 
 <ul>