Used once or twice - as good as new. Specification: Colour:Black Connectors: Thunderbolt 3 (for connection to PC) 4 x USB 3.1 Type-A Gigabit Ethernet Product Width:374mm Product Length:230mm Product Height:168mm Product Weight:6910g Package Width:35cm Package Length:47.6cm Package Height:23.6cm Gross Weight:6.80Kg Features: Boost your Thunderbolt 3 laptop performance with support for up to 3 slot-wide PCIe desktop graphics cards. Transforms Thunderbolt 3 laptops into a desktop-class system with 4X USB ports, Ethernet, and Razer Chroma lighting. Macs require macOS High Sierra 10.13.4 or later and compatible AMD graphics card. Windows 10 systems require external graphics (eGFX) support with RS4 or later and compatible NVIDIA or AMD graphics card. الماركة ماركة أخرى الحالة مستعمل