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OWC OWCTB3GM000H40 Gemini Thunderbolt Dock and External Storage Solution - 2 x HDD Installed - 40 TB HDD Capacity - Thunderbolt 3 - 2. 5GbE - RAID
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Product Features
Technical Overview
This storage solution features a Serial ATA controller supporting both hard drives and solid-state drives, though this configuration ships with two 20 TB hard drives installed. The Thunderbolt 3 host interface delivers up to 40 Gbit/s maximum data transfer rates, ensuring fast access to stored content while simultaneously handling docking functions.
Network connectivity includes a single 2.5 Gigabit Ethernet port for high-speed wired networking, complementing the storage capabilities with improved network throughput. The unit includes two Thunderbolt 3 ports—one for host connection and one for daisy-chaining additional Thunderbolt devices—plus HDMI output for display expansion.
This section brings together practical product details such as Number of Hard Drives Supported, Number of Hard Drives Installed, Total Hard Drive Capacity Installed, Ethernet Technology, so buyers can judge configuration, deployment fit, and day-to-day suitability with less guesswork.
Key Product Advantages
The Gemini provides both substantial storage capacity and essential workstation expansion through a single Thunderbolt 3 connection. This integrated approach simplifies setup while delivering the connectivity features professionals expect from a premium dock.
Dual-Function Design
Combines 40 TB of DAS storage with a full Thunderbolt 3 docking station, eliminating the need for separate storage and docking devices while saving desk space.
- Storage expansion and workstation connectivity in one unit
- Reduced cable clutter and power adapters
- Single Thunderbolt connection to host computer
Flexible Storage Management
Supports multiple RAID configurations and storage modes for different use cases, from performance to redundancy.
- RAID 0 for maximum performance
- RAID 1 for data protection
- JBOD for independent drive management
- SPAN for combining drives into a single volume
Deployment / Use Cases
This solution excels in environments where users need to expand both storage and connectivity without investing in separate devices. The desktop form factor makes it suitable for individual workstations or small workgroups where rack-mounted storage isn't practical.
The included OWC Dock Ejector software for Mac and Windows provides safe disconnection management, while the comprehensive RAID support allows customization based on performance or redundancy requirements.
This section brings together practical product details such as Number of Hard Drives Supported, Number of Hard Drives Installed, Total Hard Drive Capacity Installed, Ethernet Technology, so buyers can judge configuration, deployment fit, and day-to-day suitability with less guesswork.
Creative Professional Workstation
Ideal for video editors, photographers, and designers who need both large local storage for project files and expanded connectivity for peripherals and displays.
Small Office Storage Expansion
Provides cost-effective storage expansion for small businesses without dedicated server infrastructure, with the added benefit of docking functionality for employee workstations.
Physical Profile
Designed as a desktop unit measuring 5.79 inches tall, 3.35 inches wide, and 9.37 inches deep, the Gemini has a compact footprint suitable for placement beside monitors or under desks. The 3.53-pound weight ensures stability while remaining portable enough for occasional relocation between workstations.
The physical profile is practical for deployment planning because the dimensions and weight are clearly defined: 5.79" (147 mm), 3.35" (85 mm), 9.37" (238 mm), 3.53 lb (1600 g). This helps confirm rack, shelf, desk, or cabinet fit before installation.
- Width
- 3.35" (85 mm)
- Depth
- 9.37" (238 mm)
- Height
- 5.79" (147 mm)
- Weight
- 3.53 lb (1600 g)
What's in the Box
The package includes everything needed for immediate setup and operation.
Highlights
- 40 TB installed HDD capacity across two 20 TB drives
- Thunderbolt 3 host interface with 40 Gbit/s maximum transfer rate
- 2.5 Gigabit Ethernet port for high-speed networking
- RAID support for 0, 1, JBOD, and SPAN configurations
- Two USB 3.2 Gen 2 ports for peripheral connectivity
- HDMI output for display expansion
- Desktop form factor with compact dimensions
- Includes Thunderbolt cable and power supply
- 3-year limited warranty
- RoHS and WEEE environmental compliance
Specifications
| Specifications | |
|---|---|
| Manufacturer | Other World Computing |
| Manufacturer Part Number | OWCTB3GM000H40 |
| Brand Name | OWC |
| Product Line | Gemini |
| Product Name | Gemini Thunderbolt Dock and External Storage Solution |
| Packaged Quantity | 1 |
| Product Type | DAS Storage System |
| Storage | |
| Number of Hard Drives Supported | 2 |
| Number of Hard Drives Installed | 2 |
| Total Hard Drive Capacity Installed | 40 TB |
| Hard Drive Interface | Serial ATA |
| Hard Drive Configuration | 2 x 20TB |
| Number of Solid State Drive Supported | 2 |
| Number of Solid State Drive Installed | 0 |
| Maximum Data Transfer Rate | 40 Gbit/s |
| Network & Communication | |
| Ethernet Technology | 2.5 Gigabit Ethernet |
| I/O Expansions | |
| Number of Total Expansion Bays | 2 |
| Number of 2.5"/3.5" Bays | 2 |
| Controllers | |
| Controller Type | Serial ATA |
| RAID Supported | Yes |
| RAID Levels | 0, 1, JBOD, SPAN |
| Interfaces/Ports | |
| Drive Interface | Serial ATA |
| Host Interface | Thunderbolt 3 |
| HDMI | Yes |
| Total Number of USB Ports | 2 |
| Number of USB 3.2 Gen 2 Ports | 2 |
| Network (RJ-45) | Yes |
| Number of Network (RJ-45) Ports | 1 |
| Number of Thunderbolt 3 Ports | 2 |
| Power Description | |
| Number of Power Supplies Installed | 1 |
| Maximum Power Supply Wattage | 120 W |
| Physical Characteristics | |
| Height | 5.79" (147 mm) |
| Width | 3.35" (85 mm) |
| Depth | 9.37" (238 mm) |
| Form Factor | Desktop |
| Weight (Approximate) | 3.53 lb (1600 g) |
| Miscellaneous | |
| Package Contents | Gemini Thunderbolt Dock and External Storage Solution 1 x 0.7M (28") Thunderbolt (USB-C) Cable 1 x External Power Supply and Power Cable 1 x Quick Start Guide for OWC Gemini 1 x Support Manual for OWC Gemini 1 x OWC Dock Ejector for Mac and Windows (software download) 1 x User Guide for OWC Dock Ejector |
| Environmental Compliance | Restriction of Hazardous Substances (RoHS),Waste Electrical and Electronic Equipment Directive (WEEE) |
| Warranty | |
| Limited Warranty | 3 Year |
User Manual
FAQ
What storage capacity comes installed in this OWC Gemini unit?
This configuration includes 40 terabytes of installed hard drive capacity, achieved through two 20 TB hard drives. Both drive bays are populated, providing immediate substantial storage without requiring additional drive purchases or installation.
What types of RAID configurations does this storage solution support?
The OWC Gemini supports RAID 0 (striping for performance), RAID 1 (mirroring for redundancy), JBOD (treating drives independently), and SPAN (combining drives into a single volume). This flexibility allows customization based on whether you prioritize speed, data protection, or storage management preferences.
What connectivity options does the Thunderbolt dock provide besides storage?
Beyond the storage functionality, the dock includes a 2.5 Gigabit Ethernet port for wired networking, HDMI output for connecting a display, two USB 3.2 Gen 2 ports for peripherals, and two Thunderbolt 3 ports—one for connecting to your computer and one for daisy-chaining additional Thunderbolt devices.
Can I install solid-state drives in this unit instead of hard drives?
Yes, the OWC Gemini supports both hard drives and solid-state drives in its two 2.5"/3.5" bays. While this specific configuration ships with hard drives installed, you could replace them with compatible SSDs if you prefer faster storage media, though you would need to provide the SSDs separately.
What is included in the package with this storage solution?
The package contains the Gemini Thunderbolt Dock and External Storage Solution unit, a 0.7-meter Thunderbolt (USB-C) cable for connecting to your computer, an external power supply with power cable, a quick start guide, a support manual, a download for OWC Dock Ejector software, and a user guide for the Dock Ejector utility.
What warranty coverage does this product have?
OWC provides a 3-year limited warranty for this Gemini Thunderbolt Dock and External Storage Solution. This coverage offers protection against defects in materials and workmanship for three years from the date of purchase, giving buyers confidence in their investment.
How many cores are listed?
the specifications are intended to help buyers confirm fit, compatibility, and expected day-to-day operation. In practical terms, the best reading of this product comes from how its hardware, connectivity, and deployment details work together.
| Qty | Price | Available |
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