There are lots of clients asked how should I print my logo on USB drives,which kind of logo files I have to provide,basically below step is enough to solve this problem:

1.We recommend that you offer the artwork in Adobe Ilustrator 9 or 10 in (ai) or (eps) format.
2.Please contact us if your logo contains gradients or shades.
3.Any texts that appears in your logo should either be embedded in the file or made into outlines. Embedding or creating outlines is important as fonts can be lost or substituted without it.
4.Logos with same colour but different shades will be considered as two different colours and will incur extra charge (light and dark grey).

Below picture with explainations would be clearly state this question:

More query,please do not hesitate to telephone us or write email to us directly.