The empty "fpu looking" socket might very well have been for an FPU. most of the IIsi PDS right angle adaptors (commonly found with IIsi ethernet cards), had an FPU option, since the IIsi didn't have one natively. The adaptors were all the same, it was just a matter of if the vendor filled the socket. But that would only be the case if this empty socket is on the right angle adaptor, and not on the ethernet card itself. If it is on the enet card, then yeah, it might be a boot rom... but did the early mac's support boot roms? I don't think they did. I base this on the "oh wow" factor of the Netboot that arrived with OS 9/Original OS X Server, and on the old "TDM - The Diskless Mac" setup by Sonic(?). -chris <http://www.mythtech.net>