Seizure, confiscation of a computer with high value?

Person A was confiscated a self-made computer about 10 months ago because of suspected counterfeiting. Tablet, laptop, and external hard drives were also confiscated.

After 10 months, there was an answer that the confiscation of the computer is being considered as an instrument and that it can't be released. What does this mean exactly?

If it is an instrument in a computer, it is the storage media on which the files are stored, not an individual computer. What can Person A do to get his computer back?

Person A would voluntarily forego the data carriers for the time being.

Nothing at all. If you take a dirty picture of a person in the toilet e.g. The mobile phone is also confiscated and confiscated. Simply as a tool. Not only is the SD card pulled out. And I can tell from your text that person A is guilty. A should ask his lawyer

If you shoot someone with a gun then not only the bullets will be collected but the whole pistol xd

That is not a comparison. Will the pants be removed even if you have drawn the weapon out of them?