Yeah you need to use a Token Ring switch to connect them together as they don't support direct NIC-to-NIC connections, well, at least not more than two and you have to do some impressive hacks to get two Token Ring NICs to talk together with a direct cable (technically all Token Ring switches are actually 'hubs' but since there is no collision in token ring, ethernet collision logic is not necessary).
The 8228 MAU doesn't operate on power (it's a completely passive device). If you buy one, you'll need to build your own setup aid to prime the relays if it doesn't come with one
http://www.mcamafia.de/mcapage0/8228tool.htm
All of the logic in Token Ring is handled by the NICs, there are no incompatibilities with any MAUs. The only caveat you need to be aware of is that some Token Ring NICs, particularly the 100 mbps ones, attempt to detect the speed automatically. However if they fail to do so the ring will never be established and the NICs will be stuck negotiating and never agreeing on a speed; therefore set them to a fixed speed.
You'll either have to buy an unobtanium Token Ring to Ethernet LAN bridge (IBM made a few and so did other manufacturers), find an IBM firewall with token ring and ethernet and create a complex config through the CLI to bridge both, or, the IBM Network Bridge Program where a PC with a token ring and ethernet NIC can be used to bridge the networks together. I think on ebay there may also be some weird converters but it's been a long time since I've looked at any.
