I have connected to the switch from my Win7 computer with the following equipment. (the blue cable isnt the exact one, but nearly the same)
INFO: RAM test beginning. PASS: RAM test, 131072k bytes found. INFO: BBR tests beginning. PASS: BBR test, 512k bytes found. INFO: Self tests complete. INFO: Downloading switch software. Force EPROM download (Y) ? INFO: Initial download successful. INFO: Initialising Flash File System.
It stalls for 2-3 seconds on "Force EPROM download (Y) ?", and if i don't do anything, it just continues and doesn't give me a terminal to write in or enter credentials.
I have also tried to find a reset button, and managed to find one behind a sticker to the left of the ASYN0 / console port, as shown below. There was no button there, so i opened the switch and connected a wire between the connectors to reset, and tested this several times(10 sec also).
The manual can be found here.