Specification:?1.Support USB version 2.0 and 1.02.Hot Plug & Play3.Durable solid-state storage4.No external power is required 4.5V ~ 5.5V from USB port5.Support Win98/ME/2000/XP/Vista/7， Mac OS 9.X/Linux2.4 without device drive6.Support solution for Linux kernel version 2.4 or later version7.Driveless for OS 9X or up8.Compatible with USB 1.1/2.09.Operating Temp: -10 to +55Deg.C1.Is the usb flash drive real capacity?Sure，Our usb flash drive is the real capacity，you can use the H2text to text it.H2text is most authoritative ing software in the wod.If you need this? software，we can free provide to you.2.what is the write speed?our USB flash drive write speed is 5M/S -- 10M/S or you will lucky to get 11M+.if you want to save 1GB film in our USB flash drive，that you need the time is 2? mins，it save your time.3.Why the USB flash drive real capacity is not correct capacity?Flash memory vendors are using decimal arithmetic:1MB = 1000KB，1G =? 1000MBcalculated， the operating system using binary arithmetic:1MB = 10B，1GB =? 1024MB;so there are some differences between display capacity and nominal capacity? of flash memory productAbout Real Capacity1GB = approximately920MB-999MB2GB = approximately1.8GB-1.9GB4GB = approximately3.75GB-3.9GB8GB = approximately 7.4GB-7.85GB16GB = approximately 14.2GB-15.8GB32GB = approximately 28.2GB-30GB64GB = approximately 58GB-60GBWe provide 1 Year Warranty. Buy with confidence!?? ? If you are not satisfied when you receive your item， please return it within 14 days for a replacement or money back. Please contact me before you return it.?? ? If item is defective in 3 months， We will send you a replacement without extra charger， or offer after we receive the defective item.?? ? If item is defective after 3 months， you can still send it back to us. We will send you a new one after receiving the defective item. But you have to pay the extra shipping feeLogistics:?1. WODWIDE SHIPPING. (Except some countries and APO / FPO)2. Orders processed timely after the payment verification.3. We only ship to confirmed order addresses. Your order address MUST MATCH your Shipping address.4 It will be ship ， ， UPS， ， TNT， most countries only takes 3-7days working days;. Air Mail need about 10-25days arrive to most countries but the Brazil， Russia， Turkey sometime will delay more because the local post office and custom. (except holiday)5. SERVICE TRANSIT TIME is provided by the carrier and excludes weekends and holidays. Transit times ， particulay during the holiday season.6. If you have not received your shipment within 30 days from payment， please contact us. We will track the shipment and get back to you as soon as possible with a reply. Our goal is customer satisfaction!7. Due to stock status and time differences， we will choose to ship your item from our first available warehouse for fast delivery.Warranty and Guarantee:12 months Warranty. Buy with confidence!1.If you are not satisfied when you receive your item， please return it within 14 days for a replacement or money back. Please contact me before you return it.2.If item is defective in 3 months， We will send you a replacement without extra charger， or offer after we receive the defective item.3.If item is defective after 3 months， you can still send it back to us. We will send you a new one after receiving the defective item. But you have to pay the extra shipping fee.Shipment:1 ?Most orders will be shipped out within 2-5 business days upon payment confirmation. If there is any exception， we will keep you posted by leaving a message.2 ?When receive the goods， please check whether the package is broken and the goods is OK. If there is broken caused by shipment， please take photo and ask the courier to sign. We will help to ask compensation for you.3 ? duties， taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding/buying. ?Feedback:We are an honest seller on . All our it come from China with high quality.??If you have any problem after receive the products， please contact us immediately.?Feedback is ant to us， please take time to leave a positive feedback if you are satisfied with our product and service.? We guarentee to do the same for you.?Thank you for giving us a chance to make things right by good communication.