diff --git a/index.html b/index.html
index 990d5789e96fa3210415de4c8e3eb009438937f7..0cc1cbb90d223308437ba93458e1cde98793e844 100644
--- a/index.html
+++ b/index.html
@@ -206,7 +206,7 @@ The communication test measures how quickly two nodes can exchange messages; thi
 <tr>
 <td>0.250</td>
 <td><a href=comm/iCE40/ring.v>iCE40, Verilog</a> (<a href=comm/iCE40/README.md>notes</a>)</td>
-<td>two 22 gauge jumpers (tx/rx)</td>
+<td>tx/rx jumpers (3.3V)</td>
 <td><a href=comm/iCE40/ring.v>iCE40, Verilog</a></td>
 <td>September 2021</td>
 </tr>