More recent versions includeUSB Attached SCSI(UAS) andSerial Attached SCSI(SAS).
USB is much faster, with a maximum incoming speed approaching 40Gbps.
How Does SCSI Work?

Adaptec SCSI Host Adapter.PMC-Sierra, Inc.
SCSI interfaces used internally in computers to connect different types ofhardwaredevices directly to amotherboardor storage controller card.
When used internally, devices are attached through a ribbon cable.
What Are the Different SCSI Technologies?
They’re sometimes referred to by their busbandwidthin MBps.
Faster versions came later with support for 16 devices and a 12-meter maximum cable length.
Here are some of the other SCSI interfaces that have existed: