LOGO can be JPG, JPEG, GIF, PNG, BMP format,limit size to upload on page is 5MB.
3.Color, monochrome screen printing, two-color or multi-color screen printing (additional costs are required, please contact customer service)
4.If you do not send us a logo within 12 hours, we will send you a USB flash drive without any logo by default
 

About 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 * 1000B
Operating system calculation method:
1GB = 1024MB = 1024 * 1024KB = 1024 * 1024 * 1024B
Therefore, the 1GB storage in the operating system is displayed as: (1000^3)/(1024^3)≈0.93GB
128MB = approximately 115MB-125MB
256MB = approximately 230MB-250MB
512Mb = approximately 470MB-500MB
1GB = approximately 950MB-980MB
2GB = approximately 1.7G-1.9G
4GB = approximately 3.6GB-3.8GB
8GB = approximately 7.4GB-7.6GB
16GB = approximately 14GB -15GB
32GB = approximately 28GB -30GB
64GB = approximately 58GB -60GB
128GB = approximately 110GB -120GB
So there are some differences between display capacity and nominal capacity of flash memory products.

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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.