PROMISE SANLink2 Thunderbolt 2 to 10 Gb/s Ethernet Adapter HFJX2ZM/A The Promise SANLink2 10GBaseT adapter brings 10 Gb/s Ethernet connectivity to your Thunderbolt 2-enabled Mac. It delivers full native 10 Gb/s speeds at full-duplex bandwidth over a single Thunderbolt 2 connection. So whether you're working from a remote location or at your desktop, you experience direct networking connectivity to 10 Gb/s from your Thunderbolt device. With Thunderbolt 2 now built into the new Mac Pro and MacBook Pro with Retina display, you can connect up to three 4K displays at once. Thunderbolt 2 gives you up to 20 Gbps in both directions, allowing for super-fast data transfer between peripherals. You also have enough bandwidth to daisy-chain multiple high-speed devices without using a hub or switch. Thunderbolt also provides double the power of USB 3.0, delivering 10 watts to peripherals for improved performance on the go. Features:Dual 10 Gb/s BaseT Ethernet ports for networking Dual Thunderbolt 2 ports, so you can daisy chain up to 6 devices total Backwards compatible with original Thunderbolt-enabled systems and devices Extremely quiet and eco-smart Daisy-chains multiple Pegasus2 devices to a Mac Pro with SANLink2 10GbaseT for easy sharing of your stored content over Ethernet with SMB/AFP protocol Auto negotiate with 10 Gb/s, 1 Gb/s and 100 Mb/s ACPI power management LED Indicators for connection speed, fan and Link status Specifications:Connections: Thunderbolt, Thunderbolt 2 Height: 4.3 cm/1.69 in. Length: 16.3 cm/6.4 in. Width: 9.2 cm/3.62 in. Weight: 600 g System Requirements Operating System: Mac OS X v10.8.5, v10.9, or later Connection: Mac with Thunderbolt port What’s in the Box Promise SANLink2 Thunderbolt 2 to 10 Gb/s Ethernet Adapter Thunderbolt cable (3.28 ft./1 m) Quick-start guide Power adapter with cable