These are Sunon MagLev blower fans made for the Apple IMac computers (20" Core 2 DUO models). They are very powerful yet very quiet! Operates on 12VDC and rated 3.8Watts. Size is about 4-3/4" long x 4-3/16" x 1-7/32" and has a 4 slot tiny connector. New -these are advertised for up to $74 each.
