USB2.0 Loopback Plugs
High quality, loopback plugs for USB 2.0 troubleshooting and USB 2.0 testing.
Related hardware
USB1.0 Loopback plugs
Serial and Parallel Loopback plugs
Related software
BurnInTest software
USB2Test Software
Related links
USB 2.0 Loopback Plugs FAQ
Closer look at the USB2 plug
Compare USB1 and USB2 plugs
Related downloads
USB 2.0 Device Drivers and Documentation
Pricing
See pricing table below.
USB Loopback plugs can be used to help diagnose, troubleshoot and load test your PC.
When used with the BurnInTest Professional software package V4.0 or higher and USB2Test Software, it is possible to:
- Quickly check if a USB port is powered
- Check that data can be sent and received from the port
- Check USB errors rates and transmission speed (up to 480Mbits/sec)
- Measure the level of recovered data (retransmitted frames)
- Verify that the system remains stable under long periods of load
- Test that USB support in Windows has been correctly installed
- Test self powered USB hubs and PC ports function correctly
- Check USB cabling
- Concurrently check multiple USB ports at the same time.
- Benchmark your PC's USB ports & hubs.
- Check if your PC ports are high speed 480Mbits/sec (USB 2.0), or full speed 12Mbits/sec (USB 1.x) via a LED
Active loopback plugs are the quickest, most effective way to verify that a PC's USB ports are working correctly. The Red, Green and Yellow LED's on the front of this USB adapter plug provide a quick visual indication of I/O activity and if the USB bus is powered. This will dramatically improve the troubleshooting and diagnostic ability of computer technicians and system integrators, who have previously been working blind.
In benchmark mode, the device is capable of reaching the maximum defined transfer speed for USB2.0 (480Mbit/sec). Note: Testing has shown that most PC's can not attain speeds much above 300Mbits/sec and performance will vary depending on your motherboard, CPU and other USB devices connected to the PC.
Up to 10 of these USB test plugs can be simultaneously connected to a PC providing that free USB ports are available on the PC or on a down stream hub and sufficient power is available.
These plugs are unique! They are the only true USB 2.0 loop back adapters on the market and have been especially designed for use with our BurnInTest Professional software package or USB2Test stand alone software supplied with the plug. They do not require an external power supply and do not require a connection to any other port on a PC. Each plug also has its own serial number stored in EPROM, on the plug, so it is possible to identify each plug when multiple plugs are connected.
Each plug also contains its own CPU and executes its own firmware (which can be upgraded in the future by download) .
Technical Specifications
| USB standard: | 2.0 HighSpeed and FullSpeed (and is backwardly compatible with USB 1.1 and 1.0) |
| Plug and play: | Compliant |
| Physical connector: | Standard 4 wire USB (2 x Balanced Signal, 1 Voltage [VBUS], 1 Ground [GND]) |
| USB Transfer modes: | Bulk |
| Voltage: | 4.4V - 5.25V. (No external power supply is required) |
| Current: | 250mA (typical operation) |
| Clock speed: | 24Mhz |
| Device memory: | 8KB |
| Case: | High impact MABS plastic |
| Size: | 65mm x 50mm x 20mm (2.5 x 2.0 x 0.8 inches) |
| Weight: | 35g (1.3oz) |
| Indicators: | Orange LED = USB2.0 (HighSpeed ) or USB1.0 (FullSpeed
) indicator Green LED = Transmit data Red LED 1 = Power from USB bus Yellow LED = Receive data Red LED 2 = USB bus transmission error indicator |
| EMC standards: | AS/NZS 3548:1995, EC. See also FCC DoC |
| Storage Temperature: | -20 ºC to + 70 ºC |
| Usage Temperature: | 0 ºC to + 45ºC |
| Max speed: | 480 Mbits/sec |
| Model number: | PMUSB02 (rev2) |
| RoHS (Lead free) : | Yes |
The specifications above are for the PassMark USB 2.0 Loopback plug, hardware revision 2. For a list of the differences between the USB2.0 PMUSB02 (rev2) and the PMUSB02 (rev1) loopback plugs see the USB2 FAQ page.
Pricing
| Quantity | Price ($US) | Ordering |
| 1 - 4 | $49.90 | |
| 5 - 10 | $45.90 | |
| 11+ | $39.90 |
These prices do not include shipping and do not include the BurnInTest Professional software.
Please contact
for more ordering details.
Cabling
The USB cable is not sold with the plugs at the moment. You will need to supply your own standard USB cable. While just about any USB cable will work, it is better to select a quality high speed, shielded, USB cable when testing. Note that some of the cheaper USB cables are not shielded and thus are not recommended. The cable must be shorter than the 5m allowed in the USB standard. If a USB connection is required beyond 5m one or more hubs are required to extend a USB connection. We have noted during our testing that longer cables are more likely to have higher error rates.
Compatibility
WIN32: Windows 2000, 2003, XP and Vista are supported.
WIN64: Windows 2003, XP and Vista are supported.
Window 95, 98, ME, NT4, Mac are not supported.
Linux support is coming soon (around Sept 2008, contact us for details).
In order to use the plugs BurnInTest Professional version 4.0 or above is required or the stand alone USB2Test software.
USB 2.0 and 1.1 ports are supported. (when connected to a USB 1.1 port only the lower speed, USB 1.1, mode will be used)
Plugs will work with motherboard USB ports and hub connected USB ports.
Application Programming Interface (API)
The free USB2 Application Programming Interface has been designed to allow access by 3rd party programs to the PassMark USB 2.0 loop back plug. It provides several functions to communicate with the USB2 loop back plugs as an easy way to use the plugs without having to write any device driver or extra firmware code. For more information see here.
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