The installation utility, USBHTT.msi (11 MB), contains the USB2 Hub Transaction Translator Test Suite. USBHTT is a compliance test tool which evaluates Hi-Speed USB Hubs for conformance to the USB Hub device class (Chapter 11). USBHTT suite focuses on protocol evaluation of the transaction translator unit in high-speed hubs. The 1.2 release is a requirement for Hi-Speed USB Hub silicon certification. It is not required for end product hub certification. This version of USBHTT was posted on 7/07/2003. This software release will only work on Windows 2000 and Windows XP. Please check the release notes and accompanying documentations for details on using USBHTT and how to provide the USB-IF feedback on issues and suggestions. Some of the USBHTT tests require custom test devices. These devices may be ordered from the USB-IF eStore page USBHTT version 1.2 is a maintenance release that fixes test issues, improves logging features, and removes some tests from required sequences. As one part of Hi-Speed USB Hub silicon certification process, Hub Silicon Manufacturers use the USB-IF USBHTT Manufacturer Self-Testing Program to complete USBHTT test requirements.