USB2Test is an easy to use Windows based application that allows users to quickly check that all the USB ports on their PC are functioning correctly and allows them to determine the maximum speed of these ports (and hence whether they are configured as expected). USB2Test is designed for use in conjunction with PassMark's USB 2.0 loopback plug and will test both USB 1.x and USB 2.0 ports at Full-speed (up to 12Mb/s) and USB2.0 ports at High-speed (up to 480Mb/s) rates. USB2Test extends PassMark's existing USB Loopback product by additionally providing support for High-speed (USB 2.0), performance benchmarking and enhanced error detection.

Feature description:

USB2Test when used together with a USB 2.0 loopback plug has the following features:

• A loopback mode where a user controlled (start/stop) number of data packets may be looped for reliability testing. 
• A benchmark mode where the maximum read and write speeds are determined for a user selected port. Ten packets are written out the USB port and ten packets are read from the USB 2.0 loopback plug.
• Selection from a list of USB ports that have PassMark USB 2.0 loopback plugs connected.
• User selectable loopback data of user specified constant data, incrementing sequence data or random data.
• User selectable loopback verification or no verification.
• Saving of loopback and benchmark result data to a user specified file.
• The display of port information, such as, HighSpeed (up to 480 Mb/s) or FullSpeed (up to 12Mb/s).
• The display of loopback results, such as the number of packets looped, number of verification failures and the number of recoverable errors (ie. re-transmission).
• The display of benchmark results, such as the result for each of the twenty packets sent/ received and the overall benchmarked result.
• A comprehensive help file.

The USB2Test utility can only be used with the PassMark USB 2.0 loop back plug.

Testing using the USB 2.0 loopback plug - software comparison

The USB 2.0 loopback plug may be used with either:

• USB2Test V1.0 or above. Distributed with the USB 2.0 loopback plug and downloadable (see below).

• BurnInTest V4.0 Professional or above.

A comparison of both software applications in respect of USB testing is shown below.

Feature	USB2Test V1.0 or above	BurnInTest V4.0 Pro or above
HighSpeed (USB 2.0) or FullSpeed (USB 1.x) port indication	Yes	Yes
USB 1.x and 2.0 loopback testing	Yes	Yes
USB 1.x and 2.0 Benchmarking	Yes	No
Supports PassMark USB 2.0 loopback plug	Yes	Yes
Supports PassMark USB loopback plug	No	Yes
Supports simultaneous testing of multiple USB ports	No	Yes
Support simultaneous testing of multiple PC components	No (USB only)	Yes
Scripting of test runs	No	Yes
Logging	Yes. Basic results	Yes. User selectable detail. Real time.
Error reporting	Yes. Basic errors.	Yes. Greater detail of error type reporting. User definable error classifications and text.
User configuration of loopback test data	Yes	No (Random data)
Windows 2000 and XP support	Yes	Yes
Windows 95, 98, ME, NT, Linux, Mac support	No	No

Screen shot: The main window

The above diagram shows the results display following a successful loopback test and a Benchmark test.

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