Here are listed some supply sources for the SafeNet iKey 4000:
Germany: (CYProtect) http://www.cyprotect.com/main0154.php
Switzerland and Austria: (NC&S) http://www.ikey.at/4000.html
United Kingdom: (CYProtect) http://english.cyprotect.com/main0154.php
USA: (EnvoyData) http://www.envoydata.com/security/safenet/ikey_4000.php