Power supply cable

Ok, somehow in our move I managed to lose the power cable to the TiVo mini... Now I know it is 12v 1a but what I don't know is the barrel size of the adapter. Does anyone know this spec? I'm looking online and most are 2.1mm, is this the correct size?



And I know TiVo sells replacement cables...just don't want to pay $25 when I can pay $5 :-)



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