A Response to COVID-19 From OWC Founder and CEO, Larry O'Connor

FAQ - Frequently Asked Questions - Knowledge Base

What do the numbers after the product name stand for?

For external hard drive enclosures, the numbers after the product name indicate the interface.

  • U2 = USB 2.0
  • U3 = USB 3.0
  • U3+ = USB 3.0 + FireWire 800
  • 400+ = FireWire 400 + USB 2.0
  • 800+ = FireWire 800 + USB 2.0
  • Super-S or Super-S Combo = eSATA + FireWire 400/800 + USB 2.0
  • Super-S LCM = eSATA + FireWire 400/800 + USB 2.0 with LCD display
  • Super-S3 = eSATA +FireWire 400/800 + USB 3.0
  • S2 = eSATA + USB 2.0
  • S3 = eSATA + USB 3.0