Magma ExpressBox 3T-V3

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Make your workstation mobile, and take your PCIe cards anywhere. The ExpressBox 3T-V3 can transform both computers and laptops, with Thunderbolt™ 3 connection, into powerful workstations.

ExpressBox 3T-V3 provides an ‘outside-the-box’ solution for using PCIe cards with Thunderbolt™ 3-equipped computers. High-performance work flows are possible by connecting a Thunderbolt 3-equipped computer to a Thunderbolt™ 3 expansion chassis containing PCIe cards such as video capture, media transcoding, audio processing, and fast data storage. And because Thunderbolt™ 3 is also based on DisplayPort technology, you can daisy chain a high-resolution display with your Magma ExpressBox 3T-V3.


  • Supports (3) full-length PCI Express cards
  • Attach PCIe cards to Thunderbolt™ 3-enabled computer
  • Extension of PCI Express signals outside the computer
  • Daisy-chain or end-point device
  • Thunderbolt™ 3 features speeds up to 40Gbps


  • Easy Plug and Play installation
  • Use any combination of x1, x4, x8 and x16 PCIe cards
  • Hot-swappable cooling fan
  • Additional blower fan for extra hot cards
  • Works with Mac OS X 11.12 or higher
  • 300W power supply with (2) auxiliary power connectors
Expansion Slots 3 x PCIe
2 x PCIe 2.0 x8
1 x PCIe 2.0 x4
1 x PCIe x16
Maximum GPU Length 8.5" / 21.6 cm
Data Transfer Rates Thunderbolt 2: 20 Gb/s
Operating System Support Windows, macOS/OS X
Drive Support
Internal Drive Bays 4 x 2.5"
Compatible Drive Interface SAS (Unspecified Version), SATA (Unspecified Version)
Power Source Type 250 W Internal PSU
AC Input Power 100 to 240 VAC, 50 / 60 Hz
Fans 1
Operating Temperature 32 to 122°F / 0 to 50°C
Storage Temperature -4 to 140°F / -20 to 60°C
Operating Humidity 5 to 85%
Construction Material Aluminum
Certifications FCC, RoHS, as per Manufacturer
Mean Time Between Failures (MTBF) 50,000 Million Hours
Dimensions 14.6 x 4.3 x 7.9" / 37 x 10.9 x 20 cm
Weight 7.7 lb / 3.5 kg
Packaging Info
Package Weight 10.9 lb
Box Dimensions (LxWxH) 18.3 x 11.9 x 7.9"