Lenovo DVD-R Discs, 16x Speed, 4.7GB Blank Discs, Archive Series, 50 Pieces in A Barrel, Video Backup, Stable Burning, Long-Term Preservatio

Actual storage capacity of storage products such as USB drives, memory cards, hard drives, and discs may be slightly less than the labeled capacity due to manufacturer algorithms. The discrepancy in capacity calculation standards between manufacturers and operating systems is a common industry practice. For example, in the case of discs, the actual usable capacity may differ from the labeled capacity (e.g., 4.7GB = 4.38GB). The speed indicated on discs represents theoretical recording speed, with the range (e.g., 1-16X) denoting the maximum achievable speed rather than a standard speed. Factors affecting recording speed include laser head aging, computer settings, compatibility between the recorder and disc, and recorder limitations. It is recommended not to record at the maximum speed to maintain recording quality and success rate.