New bunny inserted on macbook pro - in arming mode - seems to work then after a min OSX disconnects (terminates) it. Logs show:
kernel USB device F000FFF014100002 - will be reset!
kernel USB device F000FFF014100002 - fConsecutiveResetCount = 1
kernel AppleUSBHostPort::disconnect: persistent enumeration failures
Plugging it back in - in arming mode - nothing happens. Once USB caches expire after a few min, when I insert it LED goes green, then finder sees it as USB storage but a min later osx terminates the USB drive again. It's pretty consistent.
Also doing ls /dev/tty* or grepping dmesg has never shown anything related to the drive in osx. I end up using windows in fusion to putty to it serially. Then a min later osx host terminates the USB drive...