About this item:UGREEN USB C extension cord is designed for extending the connection between USB-C devices such as Nintendo Switch, MacBook, MacBook Pro 2016,2017, 2018 MacBook Air or Samsung S8, Note 8 for Charging or Data Syncing. For Nintendo Switch, it can protect the console from getting scratched by the dock.Super Speed Charging and Data Syncing: The USB 3.1 type C extender lead can support charging speed up to 20V/3A ouput and 5Gbps Data Transfer. Less time for waiting, More time for entertaining. Note:1/ Please make sure that the connected power supply is comaptible with your laptop. 2/ For high-power devices like printer, please connect it with a power supply for additional power supply.Bidirectional Design: The USB 3.1 Gen1 type c extension cord is bidirectional, both sides can work with the host or target. As an extension cable, it can acess hard-to-reach place or extend the short cable, which can also protect the USB-C port in your device from frequent plugging and unplugging. (Note: If it can not work with your USB hub, please kindly insert in reverse, then the problem can be resolved.)4K Video Signal Transfer: The type c extension cable can support 4K video output and it is also compatible with Thunderbolt 3.0. Note: For 4K video transfer, USB 3.1 USB C male to male cable is needed and please make sure that your device is USB 3.1 Type C port or Thunderbolt 3.0. Note: To use the 4K Video Output function, your laptop must support DisplayPort Alt Mode (DP Alt Mode).Universal Compatibility: UGREEN USB-C extension cable is compatible with Nintendo Switch, MacBook, Macbook Pro 2016,2017,Google Chromebook Pixel, Dell XPS 13 /15, Inspiron 5000,Inspiron 7000,Lenovo ThinkPad X270, Samsung Galaxy S8,S8 Plus,Note 8,LG 30,V20 and More USB-C devices. It is also compatible with Thunderbolt 3.0=====================================================================================================Important Notes* We suggest a total length within 5ft for both your usb c cable and this extension cable to achieve best charging and syncing speed performance.* When using video function, please make sure both your input and output devices support video in and out and with thunderbolt 3 port; Besides MAX cable total length is limited to 6ft.* When you connect to the HUB adapter, there may be a side that does not support USB2.0 data transfer.You can insert the other side for normal use.Practical USB 3.1 GEN1 Type C Extension CableUGREEN male to female USB C cable is designed for extending the connection between USB-C devices due to the limit of length or position, making things easier and more convenient.An ideal extender choice for your USB C hub or Type C dock including Apple's multi av adapter, Samsung Dex dock, Dell adapter and more.Fast Charging and Data SyncingIt can support up to 20V 3A voltage and current for charging. The actual speed depends on the USB-C male to male cable and your host device.For data syncing, it can support transfer rate up to 5Gbps, transferring bulky files like HD video in a matter of seconds.Full HD 4K Video OuputThis USB-C 3.1 extension cable can support full HD 4k video output at maximum 3840x2160 60HZ.NOTE: The premise is that your device supports video input and output and comes with thunderbolt 3 port; Besides an extra USB 3.1 C male to male cable is needed(not included).Protect C-Type Port of DevicesThe USB C extender adapter can protect the USB C port of you devices from being worn off by frequent plugging and unplugging.Compatible Devices(Partial List)Nintendo SwitchMacBook, MacBook 2016, 2017, USB-C Apple Digital AV Multiport AdapterSamsung Galaxy Note 8, S8, S8 PlusLG G6, G5, V30, V20Samsung Dex DockGoogle Chrombook PixelDell XPS 13 15,Inspiron 5000,Inspiron 7000Lenovo ThinkPad X270HP Envy x360,Pavilion x360,Spectre x360Nexus 5X, 6P