Why does my transfer speed slow down from 65mb/s to 13mb/s after a few seconds?

I assume you are using Windows. Windows shows the rate at which data is being read from the source file - not the rate it is being written to the destination. So, why does it start really fast and get slower? File copies happen rather like moving things over a conveyor belt. At the sending end is the source file, at the receiving end is the destination file. The conveyor belt is actually a section of the computer's memory. When the file transfer starts, the belt is empty and the hard drive hardware is fast, so the first bit of the source file is read really quickly, but as the belt gets full the rate at which it runs becomes governed by how fast the data coming off the other end can be written to the destination. When the destination is a flash drive, it won't be anything like as fast as a hard drive. Thus, the copy starts fast, but then slows down to the speed of the destination device. So, the copy speed indication given by Windows is showing how much has been read from the source, not how much has yet been written to the destination. If your computer has a large memory capacity (RAM) then many gigabytes of your copying file can be in transit (on the belt if you like) at any given moment. HTH.

No, it's gender neutral, but mines called Dave.

I bought the 64gb usb 3.0 flash drive and their are no lights, Help please

I have 128Gb it has very faint blue light when inserted .

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🚀 Speed that Moves You!

MOVIE MAGIC - Transfer a full-length movie in less than 40 seconds—perfect for on-the-go entertainment.
SECURE YOUR DATA - Protect your private files with SanDisk SecureAccess software for peace of mind.
VERSATILE STORAGE - Available in multiple capacities (16GB to 128GB) to fit your storage needs.
TEMPERATURE RESILIENCE - Designed to operate in a wide temperature range, ensuring reliability wherever you go.
SPEED MEETS CONVENIENCE - Experience lightning-fast data transfer with USB 3.0 technology, up to 10x faster than USB 2.0.

The SanDisk 64GB Ultra USB Flash Drive combines cutting-edge USB 3.0 technology with a sleek design, offering up to 130 MB/s read speeds. With the ability to transfer a full-length movie in under 40 seconds and robust security features, this flash drive is perfect for professionals who value efficiency and data protection.

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Brand	SanDisk
Product Dimensions	1.07 x 2.21 x 0.79 cm; 9.07 Grams
Item model number	SDCZ48-064G-U46
Manufacturer	SanDisk
Series	SDCZ48-064G-U46
Colour	Black
Form Factor	Slide
Processor Count	1
RAM Size	64 GB
Computer Memory Type	DDR3 SDRAM
Hard Drive Size	64 GB
Power Source	Hand-operated
Hardware Platform	Mac
Are Batteries Included	No
Lithium Battery Weight	2.5 Grams
Number of Lithium Metal Cells	1
Item Weight	9.07 g
Guaranteed software updates until	unknown

SanDisk 64GB Ultra USB Flash Drive USB 3.0 Up to 130 MB/s Read, Black, (Pack of 1)

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