Please read the details carefully：* Warranty: 3 years* custom logo（Free）* Color， monochrome screen printing， two-color or multi-color screen printing（Additional charges are required， please contact customer service）* After ordering， please send the logo image to our message，Or send it to my email and note your order number（zixin@smare-sz.com）* If you don't send us a logo within 12 hours， we will send you a usb flash drive without any logo by default* The logo can be in jpg， jpeg， gif， png， bmp format， the page upload limit size is 5mb* If you need to specify the present micro usb or c usb type， you can place it in the ordering instructions or contact customer service. If there is no description， we will send it randomly.* If you need more colors from usb flash drive， you can contact customer serviceWhat occasions is the gift U disk suitable for:1. Large-scale conferences， public relations activities， exhibitions， etc.， to present participants as gifts and souvenirs;2. Enterprises and institutions donate to customers as the propaganda carrier of product advertisements， website propaganda， manuals， manuals and other information;3. Gifts or premiums， to customers;4. A new carrier for corporate image and product promotion;5. Bundled product s for enterprise-level users。*Undertake advertising gift U disk customization， file copy to U disk， non-copying anti-copy U disk， anti-delete. File encryption， web page automatic pop-up， video automatic playback function U disk， anti-virus WEBKEY function U disk.We promise:1. All A+ grade s are used.2. Our products are guaranteed to undergo strict ing before leaving the factory.3. Proofing will be completed within 1-3 working days. If the batch order is normal， we will complete the shipment within 2-5 working days.Four， 14 years of professional storage and gift USB production experience， thousands of appearances to choose from， you can also open the mold according to the specified requirements. Welcome OEM OEM5. VAT special ticket/general ticket can be provided， please contact customer service for details!About packBy default， free PP bag pack is sent. If you need paper pack， tin boxes and key rings， please contact customer service!About speedAll data stored in this store comes from the official， because the computer's configuration level， file size attributes， etc. will affect the results， so the actual speed is different.About capacityThe actual usable capacity of storage products is about 90% of the label. This is because computers and storage products have different capacity algorithms (computer 1g = 1024m. Storage products are 1g = 1000m). Also， the storage products will have some space before leaving the factory. Do some healing procedures. All storage products are the same 128mb ≈ 115mb， 256mb ≈ 230mb， 512mb ≈ 470mb， 1gb ≈ 950mb， 2gb≈1.7gb， 4gb≈3.6gb，8gb ≈7.4gb，16gb≈14.5gb， 32gb≈28.8gb， 64gb≈58gb， ?128gb ≈116gbU Disk Compatibility1. Make sure the usb flash drive is propey connected to the device. 2. Confirm that the currently used equipment supports the u disk of this capacity and the corresponding file system (exfat/ntfs). 3. Confirm if the files on your u disk can be supported by the device. 4. Different main control schemes used by different devices on the market may have compatibility problLarge files above 4g that cannot be copiedFor better system compatibility， the product's factory default format is fta32 ('s standard disk format)， and a single file copy does not exceed 4g. If you need to store more than 4gb files， please reset the usb flash drive format: 1. connect the usb flash drive to the computer 2. right-click on the disk partition and select the format. 3. select ntfs or exfat format from the file system options. 4. click start and end.No response when u disk is connected to computerUnder normal circumstances， the driver will be installed automatically. If it is not recognized， turn off your computer's firewall and anti-virus software before trying. If you cannot solve it， please contact customer service online， there is professional customer service guidance to ensure the equipment is used normally.FAQ1. Why Choose Us ?A: We Engaged in TF Card， USB Flash Drive Since 2003 years with over 14 Years Experiece. Our partner-ship are Skyworth， MVA Group， Walmart etc..2. Can i Have my Brand， or Logo Printing ?A : Yes. We're Real Factory， Support ODM/OEM Service.3. Before Placing Bulk order can i have sample to ?A : Of Course. Welcome Sample or Trial order.4. I haven't done business with you guys before，how can i trust your company?A:Our company has been in and Alibaba we've been golden suppliers for years. What's more， we've got quite a lot authority certificates， for example，CE， RoHS， ISO9001， ISO 14001. I hope those above will be persuasive enough. 5. what's the shipment terms and delivery time of your company?A:Well， they depends on the quantity of your order. As you know ， we need time to manufacture the micro Memory SD card. Mostly ， the shipment time is 3-8 working days after delivery. For Delivery way， for Sample and Bulk order < 100KG， we will kindly suggest Express and Air freight， when Air freight and Sea shipping for Bulk order >200KG. As for detailed cost， it depends on your order MOQ