diff --git a/README.md b/README.md
index 7727c42..43869e7 100644
--- a/README.md
+++ b/README.md
@@ -77,7 +77,15 @@ For example:
 A current list of servers if provided on the [MorseKOB Website](http://mtc-kob.dyndns.org).
 
 ## Hardware interface options
-A good description on how to build differnt interfaces (telegraph key, sounder or both) is given on the [MorseKOB Website](http://kob.sdf.org/morsekob/interface.htm). Landline telegraphs use "closed circuits" for communications; if you have built one at home, you may also use the [loop interface](http://kob.sdf.org/morsekob/docs/loopinterface.pdf).
+A good description on how to build differnt interfaces (telegraph key, sounder or both) 
+is given on the [MorseKOB Website](http://kob.sdf.org/morsekob/interface.htm). 
+Landline telegraphs use "closed circuits" for communications; if you have built one at home, 
+you may also use the [loop interface](http://kob.sdf.org/morsekob/docs/loopinterface.pdf).
+
+Connection of a morse key:
+Serial PIN: 4 & 6
+[layout of pins](http://techpubs.sgi.com/library/dynaweb_docs/0650/SGI_Admin/books/MUX_IG/sgi_html/figures/4-2.serial.port.con.gif)
+Connecting the palm radio: keep an eye on the grounding :)
 
 # Changelog
 * v0.2 [zip](https://github.com/8cH9azbsFifZ/irmc/archive/v0.2.zip) - ported to debian wheezy and osx yosemite, DG6FL