Enter the total value of the laptop in employee assessment?

I bought a laptop for work and I'm doing the employee assessment (Austria - Vienna)

What is the maximum value?

The laptop has cost 1200. Do I give in the online form with the tools 1200 euro in?

There's nothing of an invoice / reason

And one more question when I bought an external hard drive, for example, which I also need for work, I simply add the 1200 euro with 100 euro?

In Germany, you have to write it over the useful life. I would imagine that there's such a rule in Austria.

That is, I make 1200 by 3 and then specify the 400