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Each ADE ID supports only 6 devices, this includes the master device
(the reader) and the slave device (TF card).
When the reader is restored to default settings, ALL DRM activation
records and data (including DRM books you have purchased) will be
erased from the reader! You are required to authorize the device with
your ADE ID again.
When the number of authorized devices has exceeded the allowable
amount, you will see the following error message:
To request for extension and to reset your ADE ID, go to
http://www.adobe.com/support/digitaleditions/ [Submit a web
case]. You are required to fill in your ADE ID info.
Notes in using ADE
E_ACT_TOO_MANY_ACTIVATIONS
9