When you connect your Kindle now, Windows will not mount it as a USB storage device.
Instead, Windows will install a new device driver for it.
This process takes a moment, but does not require any intervention on your part.
Simply wait until you see ‘Ready to use’ pop up on the screen.
When that appears, it is time to configure this new connection on your PC.
In Windows 7, navigate to the Network Connections menu by opening
Control Panel > Network and Internet > Network Connections,
and locate the ‘USB Ethernet/RNDIS Gadget’ connection.
Right-click that connection and select Properties
then, within the properties list, scroll down to ‘Internet Protocol Version 4 (TCP/IPv4)’.
Open the Properties menu, select Use the following IP address, and enter 192.168.2.1 for the address and 255.255.255.0 for the netmask.
Click OK, and then click OK again to close the connection properties window.