Product Code PM011 (Previously known as PMUSB02)
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 (Theoretical Max), 60mA (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
RoHS (Lead free) Yes, see compliance page

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.


A USB cable is included with each plug. The cable is a standard 40cm A-B USB cable. While just about any USB cable will work, it is best to use 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.


Windows XP, Vista, Windows 7, 8, 10 & 11 are supported (32bit and 64bit).
Linux Kernel 2.6.9 or higher with LibUSB are are supported. Only the loopback funtions are supported in Linux (not the benchmark function).

In order to use the plugs you also need at least one of the following 4 software applications.

A) BurnInTest Professional for Windows version 6.0 or higher, or
B) The free stand alone USB2Test software for Windows, or
C) BurnInTest for Linux version 3.0 or higher.
D) Your own code using the Windows or Linux Programming API.