SpeedFan also monitors S.M.A.R.T. readings for EIDE, SATA and SCSI hard disks. It supports analysis for disks connected via PATA/SATA, USB, IEEE 1394 and SCSI. The Zip Zoom is a relabeled ISA Adaptec SCSI host controller. Examples include USB, FireWire and higher-end SCSI devices. SuperDisk drives have been sold in parallel port, USB, ATAPI and SCSI variants. These are USB, Audio, SCSI and network card adapters. This was a problem for early parallel SCSI disk-drives. The self-test logs for SCSI and ATA drives are slightly different. SAS connectors are much smaller than traditional parallel SCSI connectors. SAS evolved from SCSI direct-attached storage. Adapters were available to run SCSI devices via parallel. One commonly used set is defined in the MMC SCSI command set. XENIX System V release 2.3.1 introduced support for i386, SCSI and TCP/IP. Low-level device drivers, namely those for storage devices and SCSI adapters, will not be compatible. Its hardware included three embedded SCSI controllers.