diff --git a/README.md b/README.md
index ec7251b..6355388 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,8 @@ poi fare il reboot
 
 riferimento [link hauppauge](https://www.hauppauge.it/site/support/linux.html#tabs-3)
 
+fw Si2168-B40 [link fw](https://palosaari.fi/linux/v4l-dvb/firmware/Si2168/Si2168-B40/)
+
 per verificare
     sudo dmesg | egrep -i '(ivtv|tveeprom|tuner|dualhd|em28xx)'