Detailed Information About The Product: Card Expresscard 54mm to USB 3.0x2 Port Adapter; Support card 54 slotSupport USB 1.1 / 2.0 / 3.0; Support USB 3.0 Specifications, rate up to 5Gbps2 X USB 3.0 specifications ports; Notebook Card54 USB3.0 Expansion CardExtend 2 USB3.0 ports on PC with ExpressCard54mm slot;Compliant with USB3.0 interface specificationinterface type Product DescriptionCompliant with revision 1.0 of the USB 3.0 specificationSupport low speed 1.5Mbps) / full speed 12Mbps) / high speed transmission 480Mbps) / super high speed 5Gbps)2 downstream ports supporting ratesSupports all USB-compliant data types as follows; control/bulk/interrupt/isochronous Revision 0.95 of the Compatible Extensible Controller Interface XHCI) SpecificationSupports USB legacy functionsCompliant with data rates up to 5GbpsSupports external power sockets to supply connectivity capability for each USB 3.0 port up to 900mASupport Windows 2000/XP/2003/Vista/WIN 7, win8/WIN10Compliant with XHCI Revision 0.95 specificationBackward compatible with USB2.0/1.1 specificationThe data rate of the USB3.0 interface can reach 5GbpsThe data rate of the USB2.0 interface can reach 480MbpsThe USB3.0 interface can 900mA of current to power external devicesSupport plug and playWorking temperature: 0 ~ 5 7 , working humidity: 5 % ~ 9 5 % relative humidityOperating voltage: 3.3V~5.0V, storage temperature: -20~85Colour: silverMaterial: metalSize: 14 x 9 x 2CM Package Contents:1 x Card 54mm to USB3.0 Card1 x USB Cable1 x CD driver Only the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed error is /- 1-3cm.About UsWe provide the good product with the best price,we support Wholesale/Drop Shipping Order1. For Drop Shipping order, please remark"dropshipping order", we will prioritize it.2. For Wholesale/Drop Shipping orders, if you have any ideas about the price or package,please contact us in advance,we will give you the best service to satisfy your demands.About Shipments1.We will send out the orders ASAP once your payment is completed normally.2.Please write your complete delivery address with correct phone number and zip code, especially please confirm your full name.About After-sale ServiceWe are reliable seller and we have our professional after-sale service for all of our customers. If there is any question about the order,please contact us in advance ,we will always here until you get a happy answer.About Feedback1. Please check the package and item when you get carefully to make sure there is no problem.2. If you have any problem or are not entirely satisfied with your package,please dont be hesitate to contact us first before leaving negative feedback. We will resolve the problem to satisfy you.3. If there is no problem, please leave us five star positive feedback.Your affirmation is our greatest motivation ! ! !