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<t>Searching this forum I have found that a number of people have had the exact problems as I have. TrackIR4 PRO just stops functioning after some time. Only top red LED is faintly on and bottom blue LED blinks periodically. The four IR LEDs are off and TrackIR4 software cannot find the hardware. <b...

At the end of the cable there is a piece of paper glued to the cable with a bar code and a number 050577. Is that it?

<t>I have recently bought TrackIR4 PRO as a new item from eBay. It functioned perfectly for about a month then began to behave erratically. All of a sudden the green light would go out and it would stop tracking. Unplugging and plugging it in again would solve the problem for a minute or two and tha...