diff --git a/www/index.html b/www/index.html
index 8a213f0e..0ac0ec6d 100644
--- a/www/index.html
+++ b/www/index.html
@@ -172,7 +172,7 @@ <h1>EC2Instances.info <small>Easy Amazon EC2 Instance Comparison</small></h1>
           <td class="computeunits"><span sort="13">13 (4 cores x 3.25 units)</span></td>
           <td class="storage"><span sort="0">0 GB (EBS only)</span></td>
           <td class="architecture">64-bit</td>
-          <td class="ioperf"><span sort="1">Moderate</span></td>
+          <td class="ioperf"><span sort="1">Moderate / <abbr title="EBS-Optimized available">500 Mbps</abbr></span></td>
           <td class="maxips">60</td>
           <td class="apiname">m3.xlarge</td>
           <td class="cost" hour_cost="0.50">$0.50 per hour</td>
@@ -184,7 +184,7 @@ <h1>EC2Instances.info <small>Easy Amazon EC2 Instance Comparison</small></h1>
           <td class="computeunits"><span sort="26">26 (8 cores x 3.25 units)</span></td>
           <td class="storage"><span sort="0">0 GB (EBS only)</span></td>
           <td class="architecture">64-bit</td>
-          <td class="ioperf"><span sort="2">High</span></td>
+          <td class="ioperf"><span sort="2">High / <abbr title="EBS-Optimized available">1000 Mbps</abbr></span></td>
           <td class="maxips">120</td>
           <td class="apiname">m3.2xlarge</td>
           <td class="cost" hour_cost="1.00">$1.00 per hour</td>
@@ -208,7 +208,7 @@ <h1>EC2Instances.info <small>Easy Amazon EC2 Instance Comparison</small></h1>
           <td class="computeunits"><span sort="20">20 (8 cores x 2.5 units)</span></td>
           <td class="storage"><span sort="1690">1690 GB (4x420 GB)</span></td>
           <td class="architecture">64-bit</td>
-          <td class="ioperf"><span sort="2">High</span></td>
+          <td class="ioperf"><span sort="2">High / <abbr title="EBS-Optimized available">1000 Mbps</abbr></span></td>
           <td class="maxips">60</td>
           <td class="apiname">c1.xlarge</td>
           <td class="cost" hour_cost="0.58">$0.58 per hour</td>