You only need this cable:
Hello, This issue is already fixed in the latest 6.41rc version of RouterOS. Please use the “check for updates” button in your configuration interface to upgrade.
For write i use this:How did you get write access to the addresses A0H? describe the way!
Yes, support confirms that this is a bug in this release.It's a bug in 6.38, but it's a false report. The CPU is fine and you can ignore the warning.