... specificationusb port:usb2.0 product chip:A+FLASH Chip Efficient: Data transfer rate up to: Read 15MB/sec, write 4MB/sec date ... pcs. 3. Can I have the data locked or protected? Yes, we offer data uploading service. Data can be locked or protected with ... block, whether black piece, does not destroy the original disk data, you can test the usb flash drive read and write ...