Product Name: Factory Outlet CH340g Chip Improved Version Uno R3 for Arduino with Cable Without Logo Model NO.: FUT6002-1 Dielectric: SIC Trademark: FUT Transport Package: ESD Antistatic Bag Specification: 56g Origin: China HS Code: 85340090 Product Description Hereby declare:In the same performance guarantee UNO R3and master chip ATMEGA328P-AU same premise, We replaced the USB chip,Improved download speed, Increase the stability of the win7 win8.but it does not support MACUsage:1 download for arduino 's IDE2 USB chip driver download;3 Plug UNO R3 development board, the driver will automatically install4 Select the card inside the die UNO R35 Select the COM port that my computer can query your UNO R3 board just inside the port6 best first choice , for arduino own routine procedures , burn inside.Advantages :1. a completely solve the traditional UNO R3 board is not compatible with win7 and win8 system instability above2. increase the pin socket , to facilitate the use of DuPont line.3 . Replaced 16u2, so the cost is reduced by half, to get the maximum benefit consumers After sales1,Shipping Warranty:We usually ship goods By DHL, UPS, EMS, Singpost airmail, and HongKong Airmail.DHL: 3-5 daysUPS: 5-7 daysEMS: 10-15 working daysChinapost/HongKong Airmail: 7- 25 working days. At most 45 days.If you have not received the goods during the normal time, please contact us for checkingthepackage statustimely online or by email.2,Product replacement and warranty Ifyou have any prodcut quality problem, you can send it back to us with the original condition,we will repair or exchange new one for you. If you have any using problem of the products which buy from FUT, please feedback to us first, and we will discuss the issue with you. Via our technical support, we can dig out your using problem via our technical support in most of cases. Lost Products: If products get lost in delivery, or you still do not get your item for a long time, please contact our customer service timely. We will deal with this ASAP. Please do not deal with it all by yourself, we want you communicate with us. Usually, we will provide tracking number and tracking link timely. If products get lost on the way and we get confirm from couriers, we will arrange redelivery for your products. If you want ship it through express, then you need to pay express shipping fee. 3,Technical Service:. If you have technical problem with the product you received from us, please contact us online or by email: Contact usRemote help service: If your problem needs to be solved by remote help by our engineer, please download the teamviewer software, install it on your computer, then give us ID and password for remote help.FAQ1,How aboutthe quality of your product? Before shipping out, all goods have been double verified by FUT quality inspection center ,Our test engineer will check for quality, including check the basic function of the hardware and software, the appearance, the packing, the necessary accessories and power adapter plug standard. Less than 1% repairing rate within one year. 2,What is the delivery time? Normally, 1-5 workdays after payment; Special requirement orders, delivery time is negotiable. Richstockcansatisfyurgentrequirement.Andsupportsmallorders. 3,What are the warranty and after-sale of the product? If the products can't work after receiving it,we will replace your new product immediately and make the judgement for the issue. If the products don't meet my demand after I received it,you can return back to us, we will refund your full payment. 1-2yearswarrantyaccordingtodifferentproducts 1-3monthstoreplacenewitemsforfree. 4,Can you OEM|ODM? Of course, we can. FUT have professional R & D Center,wecan develop and manufacture according to customer's requirements. We can make your package please Such as printing your logo. 5,Are you a manufacturer? Yes,we manufacture different controller board, Exponsion Shiled Board, sensorModule for Arduino,3Dprinter Controller Board,Raspberry Pi,Banana pi. Our factory and office are in Shenzhen, welcome you to visit at any time!