diff --git a/docs/en/core/core2_for_aws.md b/docs/en/core/core2_for_aws.md
index 27f114c3..1aecc67c 100644
--- a/docs/en/core/core2_for_aws.md
+++ b/docs/en/core/core2_for_aws.md
@@ -284,6 +284,13 @@ TF card Maximum size 16GB
  <tr><td>CP2104</td><td>RXD</td><td>TXD</td></tr>
 </table>
 
+**PSRAM**
+
+<table>
+ <tr><td>ESP32 Chip</td><td>GPIO8</td><td>GPIO7</td><td>GPIO10</td><td>GPIO9</td><td>GPIO17</td><td>GPIO16</td></tr>
+ <tr><td>ESPRAM64H</td><td>SI/SIO0</td><td>SO/SIO1</td><td>SIO2</td><td>SIO3</td><td>SCLK</td><td>CS#</td></tr>
+</table>
+
 
 **SK6812-LED**
 
@@ -422,4 +429,4 @@ For more information about Pin assignment and Pin Remapping, Please refer to [ES
    anchor_search(purchase_link,quickstart_link);
    scrollFunc();
 
-</script>
\ No newline at end of file
+</script>