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File Version : 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)
Description : UHCI USB Miniport Driver
Copyright : Microsoft Corporation. All rights reserved.
Product Version : 5.1.2600.2180
Product Name : Microsoft Windows Operating System
Company Name : Microsoft Corporation
Internal Name : USBUHCI.sys
File Size: 20480 byte(s) 20.0 KB
MD5 : f8fd1400092e23c8f2f31406ef06167b
SHA1: CC5505855A357A7FDBAB228A78C890541660F14E

Download USBAS4X4.SYS
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How to Install USBAS4X4.SYS
Repair Sys ProblemsFixing a corrupted or missing USBAS4X4.SYS error is an easy process with a few steps. Open the zip-file you downloaded.Extract the .sys file to a location on your computer. We recommend you to unzip the file to the directory of the program that is requesting the file.
If that doesn't work, you will have to extract the file to your system directory.
By default, this is C:/WINNT/system32/drivers (Windows NT/2000).
or C:/Windows/system32/drivers (Windows XP, Vista, 7).
Make sure overwrite any existing files (but make a backup copy of the original file)
That should be it. Although not necessary you can reboot your computer as well.