Need help identifying this Sun(?) board. Board is approx. 6" x 61/2". Has four processors soldered on. each are marked with; TMX390Z50GF H3230681190 9342 F883 There are two large heat sinks, one for each pair. The opposite side of the board has two SCSi connections. If anyone can help, pls e-mail me at ron at cpacinc.com or call me at 800-778-2722. Thank you.