MBBench displays the speed of your hard drives and recording devices.
What is the "Burn Test" ? This simulates* a burn on either a CD or DVD in order to get the speed of the device. Actually, it doesn't display the speed but only gives you a good idea of what the speed is by measuring how fast the data is sent to the recording device.
The test works with devices that are iTunes compatible.
*this means that the media is left blank (the laser is turned off)
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