Conner Peripherals Inc, where Compaq Computer Corp is a major investor, on Friday announced that it had breached the 100Mb barrier on a 3.5 Winchester disk drive. The San Jose, California says that its CPS3100, samples available now, is a half-height 3.5 drive with 100Mb of formatted capacity. The high capacity is achieved in part by using the Run-Length-Limited encoding technique, which enables storage to be increased by up to 50% on other encoding methods. The CP3100 uses an SCSI interface fully compatible with the common-command set definition of spcification. It has average access time of 25mS and joins the 40Mb CP340 used on Compaq’s Portable III. No price was given.