I tried to connect my Novation Launchpad (not the mini version, the original Launchpad, the oldest) but it’s not detected in the USB HOST section (no device connected)
It’s working well on my computer, with the same usb cable
it looks like that the original Launchpad is not a MIDI class compliant device. It means it requires special drivers to be installed on the host (computer) to establish the connection. If it is the case, Electra cannot, unfortunately, recognize it.