Product works Product dimensions not agree

When installing then revealed, however the following problem:
In the product description, a product length of 22cm is indicated. So have expected about 18cm cable.
Unfortunately, the product as a whole (!) Is only 18,3cm long. So much shorter than described.
Thus, I have no use for it, because the cable is too short.

Have the graphics card then once tested externally and lo and behold, it works. We tested a HD7950