Q & A on Mixing thick Ethernet and 10Base-T Q: You said we can mix thick and thin ethernet. Can we mix thick cable and twisted pair ethernet also? A: Yes. There are special transceiver devices available. Such devices attach to a thick cable like a conventional transceiver. However, instead of an AUI connection to which a host can attach, the device has an RJ-45 connector for 10Base-T (i.e., twisted pair). I happen to know 3COM makes such a device, and assume other vendors do as well.