Simplify the following text for a Grade 8 native English-speaking person.
Original: A personal computer that does not have embedded Bluetooth can be used with a Bluetooth adapter that will enable the PC to communicate with other Bluetooth devices ( such as mobile phones , mice and keyboards ) .
Simplified: Originally , Bluetooth was developed to reduce the number of cables needed to connect such devices to a PC . Bluetooth is only used for relatively short distances , like a few metres .