I have a QuickCharge 3.0 spec Powerbank. So it has a default ( 1A ) mode, which I use the most with my Phone when I used it as mobile hotspot. Then I want minimum power to go to my phone as to not ruin the Phone battery.
Next to that it has a High Power mode (QuickCharge 3.0) that gets enabled by pressing the Power button.
So to power my Digitakt via the RipCord, I need to enable this High Power mode on my powerbank to deliver enough power.
With computers it highly depends what kind of motherboard you have and what power it sends over each USB port!
Even if your motherboard has USB 3.0 ports, it doesn’t mean it delivers the full Power over that port. Especially with the cheaper motherboards.
USB 3.0 specification can deliver up to 100W in power. Most laptops can handle 65W power input via their USB-C port, which some new high end powerbanks can deliver. So this mostly relevant for the new USB 3 (and 3.1 aka C) chargers that can deliver up to 65W these days.
On PC’s however, it’s totally unnecessary to deliver this kind of power via the USB port, since its main focus is delivering the specified data transfer speeds. They often give just enough power to handle standard USB class-compliant powered devices. The powersupply in your PC also has to be taken into account and how many Watts it supplies and how much will be drawn off by the CPU, Graphic card, disks, etc. So you might actually not have much left to be delivered to the USB ports at all, even if it has the capabilities to do so.
The Elektron Digitakt/Digitone/OctaTrack, etc are not official USB-class powered devices and require a lot more power!
That’s where the Ripcord comes in, which has it’s own transformer module inside the cable to take in 5V (as to draw max. possible Amp from your powerbank) and then outputing it as 12V to your device.
The Elektron Analog Four/Rythm are even worse. They require 22W of power! So you can’t find any 5V transformer cable for these, as most are capped at 9W (like the Ripcord).