Free USB/External Benchmark Tool

No, long format is not good enough because the long format can detect and mark faulty areas on a hard drive, but it doesn't check whether the data written to an SSD or USB stick is accurate, unlike tools such as H2testw or F3. For USB sticks, which are often fake, performing write-and-verify tests is important to make sure they work as they should and don't have hidden storage limits.

Slow USB-C transfer speeds can happen because of several problems, such as low-quality flash memory chips, a weak controller, old drivers, mismatched or broken ports and cables, the storage drive being almost full, or moving many small files.
To improve the speed, purchase a reliable USB drive with fast memory and a good controller, update the drivers, use a different USB-C port or cable, check if the drive's file system, like NTFS, is set up properly, and transfer large files one by one or as a compressed file.

There are several reasons why the speed test differs between phone and laptop:

• Wi-Fi hardware: A Laptop may have stronger antennas, or vice versa. It results in faster speeds, especially in congested environments.
• Connection type: If the phone uses mobile data and the laptop uses Wi-Fi, the results will be different.
• Signal interference: The distance from the router and environmental interference can affect each device differently.
• Network load: Other devices or programs using the network can impact results.
• Test method: Different apps/browsers or servers give inconsistent results.

There are many USB speed test apps. EaseUS Partition Master is one of the fastest and best tools to test external USB storage devices. It’s not just reliable for managing external USB storage devices, but also provides accurate read/write speed results. This all-in-one tool makes testing performance simple and efficient.