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OWC Manuals / ThunderBay 4 Thunderbolt 3
OWC ThunderBay 4
Thunderbolt 3 External Storage Solutions
Firmware Download Instructions
Model # OWCTB3SR.., OWCTB3SIV..

NOTE: Please download and follow these instructions before attempting to update the firmware of your ThunderBay.
OWC ThunderBay Firmware Update
Model # OWCTB3SR.., OWCTB3SIV..

NOTE: If you are using a PC with a ThunderBay purchased prior to 12-24-2018 and have not yet updated the firmware, please download the 'ZIP (for Windows)' file and follow the included instructions.

If you are using a Mac with a ThunderBay, and you EITHER purchased the device prior to 12-24-2018 and have not yet updated the firmware, OR, you updated the firmware prior to 6-21-2019 AND are using 14TB Seagate or Toshiba drives, please download the 'DMG (for Mac)' file and follow the included instructions. The new version of this file contains additional compatibility improvements for these HDD types.
Assembly Manual & User Guide
Model # OWCTB3SR.., OWCTB3SIV..