Sun-labeled ones are what you should watch for. They all seem to have the 800bpi option, and are SE SCSI. -- Spotted one over at Weird Stuff for $50 today. Sun PN 596-1219 The 800bpi option (replacement R/W board) PCB part number is 07980-66531 http://sunsolve.sun.com/handbook_pub/Systems/Sun4/RMVBL_OPT_680.html for a parts breakdown