No re set button on WD30 EZRX

recently moved. Shut everything down. Moved in new place. Nothing. Tried through hub, through direct into mac. nothing. No reset button. Is there one inside the case we cannot see? I have a years work on it. Surely there is something? Does it have a transformer? I tried different power sources. One’s that work fine on other EHD’s. The light comes on but thats all. No action… I have three like this now.
Thx