User-agent: *
Disallow: /panel

User-agent: Googlebot
Disallow: /panel

User-agent: Googlebot-Image
Disallow: /panel

Sitemap: https://www.radioshack.com/sitemap_index.xml 
Sitemap: https://www.radioshack.com/sitemap_productos.xml 
Sitemap: https://www.radioshack.com/sitemap_categorias.xml 
Sitemap: https://www.radioshack.com/sitemap_marcas.xml 
Sitemap: https://www.radioshack.com/sitemap_landing_pages.xml