The Second Peace of Thorn (1466) split Prussia into the western Royal Prussia, a province of Poland, and the eastern part, from 1525 called the Duchy of Prussia, a fief of the Crown of Poland up to 1657.
You can check to see if your computer supports Bluetooth: 1  Look for the Bluetooth icon in the menu bar. 2  Choose System Preferences from the Apple menu, then click Bluetooth. 3  From the Apple menu, choose About this Mac, then click More Info.
What Is Bluetooth. Bluetooth 4.0, is a specific protocol for device to device communication using a radio frequency. Bluetooth is most commonly known as a protocol for hands off phone control. Yet, Bluetooth is used for a lot more than just phone control. Bluetooth devices include keyboards, mice, headphones, gaming controllers, remote controls, printers, and cameras are the most common computer devices using Bluetooth.