how can I put the title of the k2 category with the first letter in uppercase like joomla articles or categories, I've tried in the advanced section sef but does not work

By default you cannot have uppercase URLs in most of the enviroments.

If you are talinkg about titles then you can use CSS. eg: text-transform: capitalize;

Thanks for your answer.
Really I mean a URL equal to the default joomla articles.
Eg:
joomla: domain.com/Category/Item.html
K2: domain.com/category/item.html

I need to be like the joomla article url. How I can do this?

Thank

This cannot be done without hacking core files, which will lead into unexpected results,

Even if you do this then this will produce issues in most of the server setups.

Guau!
Please one question:
In Parameters / Advanced tab / Advanced SEF Settings / Use the category title alias.
can be used for this purpose?
Maybe only be a problem of sef url.
In my humble opinion when articles joomla and k2 are used together would be nice URL homogeneous.
I'm only need: domain.com/Category/ and not: domain.com/category/ because my problem is that I used an old version of K2 and have URL like this: domain.com/Category/ and now with a new version of K2 URLs are as follow: domain.com/category/ and I'll lose a lot of page rank in Google.
Can you help? I do not care so unorthodox way.
Thank.
I'm sorry for my english

It is not a matter of advanced SEF settings. It is how Joomla! and other CMS's work.
Even if you hack K2 Joomla!'s menu aliases cannot have uppercase characters.

You won't lose your pagerank if you properly redirect these URLS.

It is preferable than hacking your CMS or its essential components.

I think my problem is with sh404sef.
Ok, thank you so much.

Please I do not want to bore, only one question.
Is possible that K2 Component in the future can add in:
Advance / sh404SEF Integration / Use 'Title Alias' (instead of 'Title') for K2 URLs, but work with categories?
Right now this tool configured with: No - use the item's title converts the url so:
domain.com/category/New-Article.html
but no:
domain.com/Category/New-Article.html
You can add "No - use the category's title" in the future too?
Thank you so much

Thank you for your feedback.

You can also post feature requests here: github.com/joomlaworks/k2/issues