OWC Thunderbolt 2 Dock 5 Usb 3.0 Ports3 Standard & Two 1.5a 2 Thunderbolt Ports 3.5mm Mono Audio Input 3.5mm Stereo Audio Outpur 1 Firewire 800 Port 12 Ports of incredible connectivity Dual<span class="a-text-bold">Thunderbolt 2</span>ports for daisy-chain support Ultra-HD 4K and multiple display support Five USB 3.1 Gen 1 ports, including two high-powered charging ports FireWire 800 for connecting external storage and legacy devices (2) Thunderbolt 20Gb/s (3) USB 3.1 Gen 1 (2) USB 3.1 Gen 1 high-power charging (1) FireWire 800 (1) HDMI 1.4b (1) Gigabit Ethernet (1) 3.5mm Mono Audio Input (1) 3.5mm Stereo Audio Output DisplayPort 1.2 with support for up to 4K/60Hz HDMI 1.4b with support for up to 4K/30Hz Note <ul class="a-unordered-list a-vertical"> Dual monitor support requires the use of at least one Thunderbolt display. DVI, VGA, DisplayPort, or other connection requires the use of a mini Display Port adapter. Power Supply External UL-listed, universal auto-switching AC input: 100 ~ 240V, 50-60Hz DC output: 12V, 6.0A Adapter plugs for international use sold separately Height: 1 in (2.5 cm) Width: 9.1 in (23.0 cm) Length: 3.5 in (8.9 cm) 13.6 oz (386 g) OS X 10.9.4 or later Driverrequired for charging iPad 1, 2, 3 and also Apple SuperDrive support. Minimum <ul class="a-unordered-list a-vertical"> Mac featuring Thunderbolt interface Recommended (Best performance) <ul class="a-unordered-list a-vertical"> Mac featuring Thunderbolt 2 interface Thunderbolt, FireWire, and Ethernet on all Thunderbolt equipped Macs USB 3.1 Gen 1 ports on mid-2013 and later Macs