X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/usb-driver/blobdiff_plain/ddd89a532254ddca2f82ab57cbbae5b3c1bbe31a..77683ab696f183c63e8695063c8107d26809ed99:/README

diff --git a/README b/README
index 5ce99d8..f9b6cec 100644
--- a/README
+++ b/README
@@ -74,6 +74,14 @@ these steps:
 4. restart udev and re-plug the cable
 
 
+If you have multiple cables connected, you can specify the cable to use
+in the XILINX_USB_DEV environment-variable as "bus:device".
+These identifiers are available in the output of lsusb:
+Bus 001 Device 004: ID 03fd:0008 Xilinx, Inc.
+    ^^^        ^^^
+To use this cable, set the XILINX_USB_DEV variable to "001:004".
+
+
 Notes for the parallel cable
 ============================