Adapter see the network but don't connect. No error...

Hmm... well, generally USB 2 devices are backwards compatible, so you should be ok there. I would suggest that you start with checking the network settings on all of the devices. My guess is that you have the devices on different subnets. I found a procedure on the subject that can walk you through the process of checking the network settings on your computers too... http://us4.samba.org/samba/docs/man/Samba-HOWTO-Collection/ClientConfig.html. Make sure that each of them are set to DHCP so that the router can automagically assign the right addresses. You may also need to look at the router configuration to ensure that wireless is enabled and that the settings match... like Wireless Encryption (WEP) keys, etc. If that doesn't solve your problem, let us know and we can go deeper into diagnostics.