Fast. Thanks to its use of advanced dual-channel technology, the JetFlash 600 offers maximum read speeds of up to 32MB/s, transferring data in the fast lane. Spacious. The JetFlash 620 offers vast storage capacity up to 64GB, providing more than enough space to store all your personal files and business-related documents. Absolutely secure. The JetFlash 620 comes bundled with Transcend's exclusive JetFlash SecureDrive software. Once enabled, nobody but you will be able to access files stored within the secure Private Zone-a private, password-protected area created on your JetFlash drive.