USB 2.4GHZ Ubuntu 9.10

[zongo saiba]

Hi All, 

I have a usb dongle connected on my notebook. I have connected to it my
Mobile Phone and Mouse (Logitech M555B). All is working well but was
wondering how many peripherals will I be able to add to that bluetooth
dongle ? Is there a limit or compatibility issues ? I am planning on
adding a bluetooth headset and a keyboard. I am using Ubuntu 9.10. 

Kind Regards, 

Zongo