Tag Archives: Check support for UASP

Check if your USB 3.0 device supports USB Attached SCSI (UAS) Protocol

Check if your USB 3.0 device supports USB Attached SCSI (UAS) Protocol

As you may or may not be knowing, older USB standards used a Bulk-Only Transport (BOT) protocol to transfer data between devices. When USB 3.0 was introduced, the BOT protocol was retained but a newer USB Attached SCSI protocol (UASP) was defined in the spec which uses the SCSI command set and allows for faster, multi-threaded parallel transfers with command queuing. However, due to low awareness, only a few USB 3.0 mass storage devices adopted UAS. Here is how you can find out if your USB 3.0 device supports UASP.