Simple hack. It’s a single unit of BESTA shelf unit with doors (Width: 120 cm, Depth: 40 cm, Height: 64 cm) plus
– a horizontal white board on it (Width: 170 cm, Depth: 60 cm)
– a vertical white board at right to maintain the horizontal one (Depth: 60 cm, Height: 64 cm)
– two horizontal glasses to put a HiFi unit/xbox or whatever you want on it. (A HiFi unit standard is 43cm and my glasses are (Width: 50 cm, Depth: 40 cm)
The white board depth is 60cm… 20cm more than the besta shelf. So I have 20cm for TV and HiFi cables. I removed the back board od the BESTA shelf and reinforced everything.