Greetings,
I also need to get a new power brick for my G-Drive. 0G00203 or GD4 2000. I think it is 12V, but might be 5V? It uses a 3 mm barrel connector but just says DC in. Sure would be nice to have the voltage and current listed also.
12v 2a. The power adapter part # of ours you can source online is 0G01008.
