About USB capacity:Vendors are using Flash memory decimal arithmetic: 1 MB = 1000KB, 1G = 1000 MB;Calculated, operating system with binary arithmetic: 1 MB = 1024KB, 1 GB = 1024 MB;Calculation method in the warehousing industry:1GB = 1000MB = 1000 * 1000KB = 1000 * 1000 * 1000BOperating system calculation method:1GB = 1024MB = 1024 * 1024KB = 1024 * 1024 * 1024BTherefore, the 1GB storage in the operating system is displayed as: (1000^3)/(1024^3)≈0.93GB128MB = approximately 115MB-125MB256MB= approximately 230MB-250MB512Mb = approximately 470MB-500MB1GB = approximately 950MB-980MB2GB = approximately 1.7GB-1.9GB4GB = approximately 3.6GB-3.8GB8GB = approximately 7.4GB-7.6GB16GB = approximately 14GB-15GB32GB = approximately 27GB-30GB64GB = approximately 58GB-60GB100GB = approximately 90GB-98GB128GB =approximately 110GB-120GBSo there are some differences between display capacity and nominal capacity of flash memory products.About logo●Order 1PCS-9PCS, each USB flash drive needs to charge a custom fee of $5.●Order more than 10 PCS, can provide customers with customized LOGO projects for free.●Please note that we use laser engraving to customize the LOGO, and the color cannot be customized.If you need to customize LOGO, please contact customer service.Features:Interface USB 2.0Supports hot plug & play, High speed USB 2.0 portNo physical drive requiredPlug-and-play; no external power supply required, USB bus-poweredSupport Windows computer systems,Can not support Mac system.Speeds vary depending on types of file being transferred and computer configuration.Reading speed: 8MB-15MB/sec, Writing speed: 4MB-6MB/secExcellent USB Memory stick in excellent conditionPicture Show:Warm Tips:1. To avoid data loss or mechanical damage, do not power down your computer or unplug flash disk during transfer.2. Please do not remove your USB flash drive when it is being used otherwise your data may loss.3. After using USB flash drive, it is better to remove it as soon as possible. That will help to extend its storage lifetime.4. Please do not format your USB flash drive frequently, otherwise the USB will be damaged easily.5. Your devices (such as TVs, car players, radios and other devices that need to recognize U disks) must have the latest USB driver to recognize U disks. Many old school can only recognize U disks below 32GB.6.If the U-disk can be recognized by Windows computer, but failure of recognized by other devices, then it is the problem is matter with other device not with the U disk, please pay attention, thank you.USB Flash Drive 128GB 64GB 32GB 16GB 8GB 4GB USB 2.0 Flash Memory Card U Stick High Speed memorias usb pendriveShipping and Packaging All items will be double checked and well packed before sending.Items will be dispatched within 2 business days after buyers pay for the order. It usually takes about 14 to 18 working days for delivering the package to the destination(for remote areas,it may take a little longer). Special Announcement:Please fill in the correct and detailed consignee, address and phone number in the order. For fast and correct delivery.If you do not receive order within 30 working days,please feel free to contact Customer Service before leaving Negative and Neutral Feedback, we will do our best to help you resolve the problem.TaxNo, you will only pay what is quoted as total cost at checkout, no more. You are not expected to pay any additional duties or taxes. If you are asked by Customs or our logistic partner to pay duties, please contact our Customer Service .ReturnIf the product is not on good condition, You can return this product within 14 working days, please contact customer service center before returning.FeedbackYour satisfaction is our first priorityIf you receive the order and it is in goodcondition,we would be grateful if you would leave us 5 star Positive Feedback for the transaction.If you are not satisfied with our products or services, please let us know and give us an opportunity to correct them. We will definitely let you experience our intentions and persistence. Thanks again for coming. Your presence is your trust in us and your greatest support. We cannot live up to this trust. We will do our best to help you solve problems and make you 100% satisfied. Your satisfaction is our eternal pursuit. Finally, thank you for choosing our store. I wish you a happy shopping and a happy life. Thanks for coming!