PassMark Software
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Compare USB1 and USB2 loopback plugs

The following table lists the differences between the PassMark USB1 and USB2 loopback plugs:

Feature USB 1 plug USB 2 plug USB 3 plug
  USB1 Image USB2 Image USB2 Image
USB Standard 1.1 2.0 3.0
Price (*) (Discontinued, Aug 06) $49.90 $120.00
Speed when connected to a USB1 port (#) 12Mbit/sec 12Mbit/sec 12Mbit/sec
Speed when connected to a USB2 port (#) 12Mbit/sec 480Mbit/sec 480Mbit/sec
Speed when connected to a USB3port (#) 12Mbit/sec 480Mbit/sec 5Gbit/sec
Loopback function Yes Yes Yes
Benchmark function No Yes Yes
Number of LEDs 3 5 4
High speed (480Mb/s) LED indicator No Yes No
Speed displayed on LCD screen No No Yes
Voltage displayed on LCD screen No No Yes
Error indication LED No Yes Yes
Upgradeable firmware No Yes Yes
Frame retransmission counter (after CRC failure) No Yes Yes
Power on LED check No Yes Yes
Required version of BurnInTest software V2.6 V4.0 V7.1
Stand alone test software available No Yes (USB2Test) Yes (USB3Test)
Application Programming Interface No Yes Yes
Case color Blue White Clear
WIN32: Windows XP SP3 and 2003 server, Vista, 2008 server, Windows 7 support Yes Yes Yes
WIN64: Windows XP SP3, 2003 server, Vista, 2008 server, Windows 7 support No Yes Yes1
Windows 98, ME and 2000 support Yes No No
Linux (libusb 1.0 required) No Yes Yes
Windows 95, NT, Mac support No No No
More information USB1 Product page USB2 Product page USB3 Product page
Loopback plug pictures USB1 images USB2 images USB3 Images

(*) US Dollars. Volume discounts available
(#) Theoretical maximum
1 WinXP not supported

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