There is the cable used for things like LapLink and PLIP, that was inherently bitbanged. Then in theory with ECP you could connect two PCs with straight-thru ca

There is the cable used for things like LapLink and PLIP, that was inherently bitbanged. Then in theory with ECP you could connect two PCs with straight-thru cable and get something like 500Mbps with DMA support from that, on paper it was faster than both FireWire and USB HS. Whether it ever really worked is another question.