Windows 7 not recognizing MP3 player as USB 2.0?

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So I have this MP3 player (RCA Pearl TH-1702 model) that I found laying around my house (it's only a couple months old) and I looked up to see if it's USB 2.0, and it is, but the problem is, When I try to use Readyboost, It claims that it doesn't have the required performance, but I have an older model mp3 player and it is compatible w/ readyboost ?
 
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