HardwareGrowler 2.0.1

HardwareGrowler - the best way to learn about the hardware changes in OS X. When you disconnect the power cord, HardwareGrowler notify you. Connect the devices - keyboards, flash drives, or even USB-headset and be alerted.
HardwareGrowler will also notify you of changes in the network on your Mac. When wireless connection is switched to another access point, or change IP-address changes, you will be notified.