I recently received an N64 transfer pak. When I looked at the label it was orange, so I looked it up and found that it is a Japanese transfer pak. I am planning on buying an N64 and was wondering whether a Japanese transfer pak would work on a PAL system.
Unfortunately there is no hard evidence to say whether it will or won't work. A lot of it depends on the age of the machine, of the accessory, whether they're new or second-hand etc. The best I can say is either get a Japanese N64, spend another $xx to get another transfer pak, or just try it out and see for yourself.– BenAug 28, 2014 at 10:08
It would appear that the Transfer Paks are compatible no matter which region the system is from.
I'm gathering this information from this article (IGN) which states,
"The Japanese Transfer Pak is completely compatible with US Nintendo 64 systems and games that support the unit."
Here are my test results regarding Transfer Pak Region compatibility. sites.google.com/site/consoleprotocols/home/gamers/… Basically confirms the above.– JamesSep 13, 2018 at 23:10