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AKiTiO Thunder2 PCIe Box

As of July 28, 2021, the AKiTiO Thunder2 PCIe Box has been discontinued and this model is no longer being manufactured, sold or maintained.

The AKiTiO Thunder2 PCIe Box was a Thunderbolt™ 2 PCIe expansion box that provided an additional PCIe slot for Thunderbolt 2 computers (e.g. laptop computers) where installing an internal expansion card is not an option and for systems where there is not enough space for more PCIe cards.

The closest alternative is the OWC Mercury Helios 3S.



AKiTiO Thunder2 PCIe Box

The portable Thunderbolt™ 2 PCIe expansion box provides an additional PCIe slot for systems that do not support or have enough available space for expansion cards. The external Thunderbolt 2 connection allows you to daisy-chain up to 5 additional Thunderbolt devices, making this the ideal plug and play companion especially when you have to take your system with you. Replacing the card is a simple matter of removing three hand tightening screws, so no tools are required.


  • Two Thunderbolt™ 2 ports for lightning fast speeds of up to 20Gb/s
  • 1 PCIe (x16) slot supporting half-length, full-height, double-width cards
  • 4 lane PCI Express 2.0 compliant interface at 5.0Gbps
  • Removable back panel for double-width cards
  • Daisy-chain up to 6 Thunderbolt™ devices
  • Durable and rugged aluminum casing
  • No tools required for installation


akitio thunder2 pcie box angle akitio thunder2 pcie box front akitio thunder2 pcie box back



Model AKiTiO Thunder2 PCIe Box
Part No.
  • T2PC-TIA-AKTU (without PCIe card)
  • T2PC+T3T (without PCIe card but with T3T adapter for Thunderbolt 3 computers)
  • CE
  • FCC
  • VCCI
  • Thunderbolt™ technology
  • 2-year limited warranty
Case material
  • High quality aluminum with metal chassis
  • 1 x PCIe card (see compatibility chart)
  • Supports half-length, full-height and double-width cards
  • PCIe (x16) slot provides a maximum of 25W
  • Does NOT support graphics cards
  • 2x Thunderbolt™ 2 ports
  • 1x internal PCIe (x16) slot with 4 lane PCI Express 2.0 interface
Data transfer
  • Thunderbolt™ 2 interface up to 20Gbps
System requirements (PC) Not supported
System requirements (Mac)
  • Mac OS 10.9 or above
  • Computer with Thunderbolt connector
System environment
  • Operating Temperature: 5°C ~ 35°C
  • Storage Temperature: -20°C ~ 60°C
  • Relative Humidity: 5% ~ 95% (non-condensing)
Power supply
  • External power adapter (UL, cUL, CE, FCC, BSMI, TUV approved)
  • Input: AC 100-240V, 50Hz-60Hz
  • Output: DC +12V/5A
Fan noise level
  • 23 dB(A)
Dimensions (LxWxH)
  • 9.17 inches x 5.87 inches x 2.99 inches
  • 23.3cm x 14.9cm x 7.6cm
Package contents
  • AKiTiO Thunder2 PCIe Box
  • Thunderbolt cable
  • Power adapter
  • Setup guide
  • Retail Box Size: 12.4 x 12 x 4.9 in. (31.5 x 30.5 x 12.5 cm)
  • Carton Size (6pcs per carton): 20.8 x 13.2 x 13.9 in. (52.8 x 33.5 x 35.3 cm)
  • Gross Weight: 2.78 kg (retail box), 17.7 kg (carton)
  • The maximum real world performance of this Thunderbolt 2 device is 1375MB/s.
  • This Thunderbolt product is not compatible with Apple's Boot Camp.
  • PCIe card (driver) must be compatible with requirements for Thunderbolt technology (e.g. hot-plug support, recovery from sleep).
  • Graphics cards are not supported.
  • Thunderbolt cable not included with all models or in all regions.
  • To connect this device to a Thunderbolt 3 computer, a Thunderbolt 3 to Thunderbolt adapter like the AKiTiO T3T is required.
  • This product has components or design elements that are patented or patent pending.