The data's there and it's a fake-RAID from what I can tell.  However, mdadm can't seem to find any metadata on it.  I was wondering if anyone knows of a way to access the RAID 5 data via two RAID disks (I only have the two USB adapters to connect to the laptop) on a non-Intel system that doesn't have RAID.  Any way to read the data via mdadm?  I mean, if it's fake RAID, anyway, it shouldn't be chipset dependent; right?