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USB Flash Drive Speed Tests - VID = 21c4, PID = cd1

Welcome to Speed Tests Web site for USB Flash Drives.
In this page, you can find the speed test results of USB flash drives, made by USBDeview utility. USBDeview make this test by writing a large file into the USB flash drive, and then reading back the same file to getting the read speed. The speed is calculated and displayed in Megabytes per second (MB/Sec). Be aware that all these tests are made by making a sequential read and write operations of a single file. When you use multiple small files, you'll probably get much lower read/write performances.

If you want to test the read/write speed of your own USB drives and share the results with other people, you can follow the instructions in this page: Test and publish the speed of your USB flash drive.

There is also a summary page, which contains a summary of speed tests for USB drives that accumulated 5 speed tests or more.

Search other USB flash drives:

Some Remarks

To more easily compare the speed of USB flash drives, you can filter the list according to drive size group:

1 GB or less 2 GB Group 4 GB Group 8 GB Group
16 GB Group 32 GB Group 64 GB Group Larger than 64 GB

Product NameVendor NameDrive SizeVIDPIDRead SpeedWrite SpeedSubmitter
Lexar USB Flash Drive USB Device 14.99 GB21c4cd115.04 MB/Sec10.51 MB/Sec 
Lexar USB Flash Drive USB Device 58.33 GB21c4cd123.55 MB/Sec12.91 MB/Sec 
Lexar USB Flash Drive USB Device 59.62 GB21c4cd132.18 MB/Sec13.68 MB/Sec 
Lexar USB Flash Drive USB Device 28.90 GB21c4cd132.18 MB/Sec11.54 MB/Sec 
Lexar USB Flash Drive USB Device 29.79 GB21c4cd132.19 MB/Sec11.34 MB/Sec 
Lexar USB Flash Drive USB Device 28.90 GB21c4cd132.73 MB/Sec20.57 MB/Sec 
Lexar Jumpdrive V100 USB 3.0 32GB 28.89 GB21c4cd133.16 MB/Sec21.13 MB/SecSkelestore
Lexar USB Flash Drive USB Device 57.71 GB21c4cd134.08 MB/Sec19.59 MB/Sec 
Lexar USB Flash Drive USB Device 57.69 GB21c4cd134.70 MB/Sec20.07 MB/Sec 
Lexar USB Flash Drive USB Device 57.71 GB21c4cd136.67 MB/Sec7.38 MB/Sec 
Lexar USB Flash Drive USB Device 57.71 GB21c4cd136.93 MB/Sec16.50 MB/Sec 
Lexar USB Flash Drive USB Device 116.03 GB21c4cd137.64 MB/Sec25.37 MB/Sec 
Lexar USB Flash Drive USB Device 57.70 GB21c4cd137.66 MB/Sec20.43 MB/Sec 
Lexar USB Flash Drive USB Device 57.60 GB21c4cd137.89 MB/Sec31.30 MB/Sec 
Lexar USB Flash Drive USB Device 57.60 GB21c4cd138.66 MB/Sec28.10 MB/Sec 
Lexar USB Flash Drive USB Device 57.60 GB21c4cd139.18 MB/Sec27.83 MB/Sec 
Lexar Jumpdrive S57 - 32GB 28.89 GB21c4cd140.83 MB/Sec10.93 MB/SecJro
Lexar USB Flash Drive USB Device S57 28.89 GB21c4cd141.13 MB/Sec14.73 MB/SecJero
Lexar USB Flash Drive USB Device jumpdrive s57 28.99 GB21c4cd141.18 MB/Sec5.83 MB/Sec 

Total number of records: 19