Be careful about some power adapters being advertised as the correct one when they may NOT be exactly the right plug size!
The Elektron Overhub manual states:
Power Supply not included. Bus power from the computer host is suffcient to power 7 Overbridge devices.
Should you need to power a USB drive or charge an MP3 player you need an AC adapter (not included). Compatible power supply: 5 VDC 3A Connector 3,5 x 1,35 mm, center pin positive.
So, I ordered this adapter:
In the Q&A section, the manufacturer claimed it was the correct size DC plug: 3.5mm x 1.35mm. However, this was not true. The plug did not fit the Overhub DC jack. I had to return it, and luckily had no issues with the return process.
Question:
The 3.5mm is the external size of the plug right? And the 1.35mm is the internal?
Answer:
Yes,
3.5mm OD x 1.35mm ID
This answer was probably a mistake on the part of whoever at the company fielded the question.