SanDisk

SanDisk SDCZ73-064G-A46 64GB Ultra Flair USB 3.0 Flash Drive

USB 3.0

150MB/s read speeds over USB 3.0 in a metal-encased 64GB drive that fits your keychain and password-protects your files.

View price on Amazon
Affiliate Disclosure: As an Amazon Associate, Studio Supplies earns from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.

Notice a mistake? Let Us Know

Overview

The SanDisk Ultra Flair SDCZ73-064G-A46 is a 64GB USB 3.0 flash drive rated to 150MB/s sequential read speed, housed in an all-metal casing. The 150MB/s figure is meaningful context: it represents the effective limit of what NAND flash can deliver over USB 3.0's 5Gbps interface in a mass-market consumer drive, and it makes transferring a full 64GB of data a roughly seven-minute operation rather than the 45+ minutes that USB 2.0 drives would require. The metal housing is not cosmetic — it replaces the flex-prone polycarbonate shells common on budget drives with a chassis that resists the cracking and connector-separation failures that emerge after months of keychain carry.

This drive targets the professional or power user who transfers large files between machines regularly and wants reliable everyday carry without sacrificing speed. Photographers moving RAW files between editing workstations, IT administrators carrying OS installation media, and road warriors maintaining encrypted document vaults will all extract direct value from the 150MB/s read speed and SecureAccess password protection. The drive is less suited to use cases dominated by large sequential writes — SanDisk's unpublished write speed means users in backup-heavy workflows should evaluate a drive with transparent write specifications before committing. For read-heavy use cases — booting live OS images, distributing large files, or fast reads from an archive — the Ultra Flair delivers its specification reliably.

Key Features

Fly through file transfers

Stylish and tough

Password-protect your files

Specifications

Capacity
64GB
Interface
USB 3.0 (backward compatible with USB 2.0)
Read Speed
Up to 150MB/s
Write Speed
Not specified by manufacturer
Housing
All-Metal
Security
128-bit AES password protection (SanDisk SecureAccess)
Color
Silver/Black
Brand
SanDisk
Model
SDCZ73-064G-A46

Frequently Asked Questions

USB 3.0 delivers a theoretical bandwidth ceiling of 5Gbps versus USB 2.0's 480Mbps — roughly 10x the raw interface bandwidth. The SDCZ73's 150MB/s read speed is approximately 15–20x faster than a typical USB 2.0 drive in practice, reducing the time to copy a 4GB video file from several minutes to under 30 seconds.
Yes. The SDCZ73 is fully backward compatible with USB 2.0 ports. At USB 2.0 speeds the drive will be limited to the port's bandwidth ceiling (approximately 40–60MB/s practical throughput) rather than its 150MB/s rated speed, but all functionality is retained.
SanDisk SecureAccess software enables 128-bit AES encrypted password protection on a private vault partition. The software runs from the drive itself without installation on the host machine, making it compatible with machines where you cannot install software — though the vault is only accessible from the SecureAccess application.
The all-metal housing resists the flex and crack failure modes that plague plastic-cased flash drives. The retractable or sliding connector design (depending on variant) protects the USB plug from damage during pocket and bag carry. It is not rated waterproof, however — liquid exposure to the USB connector remains a risk.
SanDisk publishes only the read speed of 150MB/s for the Ultra Flair — write speed is not officially specified. In third-party testing, write speeds typically land in the 30–70MB/s range depending on file size and type. For write-heavy workflows like daily backup of large files, a higher-tier drive with published write specifications would better serve the use case.