HotFix

Increase the maximum USB data transfer size in Windows 7

Increase the maximum USB data transfer size in Windows 7

This post will help those Windows 7 and Windows Server 2008 R2 users who are looking for a solution to increase their read, write, copy move, data transfer speeds while carrying out the operation from their Windows computer to a USB and vice versa. Microsoft has released an update that will now allow you to increase maximum transfer size of USB storage devices in Windows 7 and Windows Server 2008 R2.

Increase maximum USB data transfer size

Windows 7, by default has set the maximum USB transfer size for USB storage devices at 64 KB. This default setting is configured in the USB port driver (Usbport.sys) in Windows 7 and Windows Server 2008 R2.

If you want to increase the maximum USB transfer size to as much as 2 megabytes (MB), you can apply this new Hotfix which has been released by Microsoft.

For some USB storage devices, performance can be improved when you increase the maximum USB transfer size beyond the default setting of 64 KB. This update is supported when the hardware vendor provides a device information file (.inf) to set this value for USB storage devices.

You may have to restart the PC after installing the update available at KB2581464.

After you have installed this update, to increase the maximum transfer size of USB storage devices, open the Registry Editor and navigate to the following subkey:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\usbstor\VVVVPPPP

Click Edit > New > DWORDValue. Type MaximumTransferLength and hit Enter. Next, click Edit > Modify.

In the Value data box, type any value between 64 KB and2 MB range. For example, to increase it to 2 MB, select Decimal and type 2097120. Exit Registry Editor.

Let us know if this works for you.

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