U nas w domu router stoi obok monitora.

U nas literally means at us, but in natural English it usually means at our place, where we live, or in our home/environment.

In this sentence, U nas w domu means something like:

• At our home
• In our house
• Where we live

It is a very common Polish way to talk about one’s home or family setting.

Examples:

• U nas jest cicho. = It’s quiet at our place.
• U nas w pracy jest dużo roboty. = At our workplace, there’s a lot of work.

They are similar, but they add slightly different shades of meaning.

• u nas = at our place / where we are
• w domu = in the house / at home

Together, u nas w domu sounds natural and emphasizes in our household / in our home. It is not strange or redundant in Polish.

Compare:

• U nas router stoi obok monitora. = At our place, the router stands next to the monitor.
• W domu router stoi obok monitora. = At home, the router stands next to the monitor.
• U nas w domu... = a slightly fuller, very idiomatic way to say in our home / in our household...

Router is a borrowed word from English, and in modern Polish it is commonly used in this form.

Even though it looks English, it behaves like a normal masculine noun in Polish and can be declined:

• nominative: router
• genitive: routera
• dative: routerowi
• accusative: router
• instrumental: routerem
• locative: routerze

In your sentence, router is the subject, so it appears in the nominative form.

Stoi comes from stać, meaning to stand.

In Polish, when talking about where furniture, devices, or objects are placed, speakers often use position verbs such as:

• stać = to stand
• leżeć = to lie
• wisieć = to hang

So:

• Router stoi obok monitora. = The router is standing next to the monitor.

This is often more natural in Polish than simply saying jest.

Compare:

• Książka leży na stole. = The book is lying on the table.
• Obraz wisi na ścianie. = The picture is hanging on the wall.
• Komputer stoi przy biurku. = The computer stands by the desk.

You could say Router jest obok monitora, but stoi sounds more specific and more natural when describing physical placement.

Because stoi is the 3rd person singular present tense form of stać.

The subject is router, which is singular, so the verb must also be singular:

• ja stoję = I stand
• ty stoisz = you stand
• on/ona/ono stoi = he/she/it stands

So:

• router stoi = the router stands

Other forms would mean something different:

• staje comes from stawać and often suggests is becoming or is starting to stand / stops
• stała is past tense feminine, so it would not match router

Because the preposition obok requires the genitive case.

So:

• monitor = nominative
• monitora = genitive

That is why Polish says:

• obok monitora = next to the monitor

This is a very important pattern:

• obok domu = next to the house
• obok szkoły = next to the school
• obok mnie = next to me

So after obok, you should expect the following noun to be in the genitive.

The base form is monitor. It is a masculine inanimate noun.

For many masculine nouns, the genitive singular ends in -a:

• monitor → monitora
• komputer → komputera
• telefon → telefonu or sometimes telefona in some contexts, though telefonu is standard
• router → routera

Since obok requires genitive, monitor changes to monitora.

Yes, Polish word order is quite flexible.

The basic order here is:

• router = subject
• stoi = verb
• obok monitora = location phrase

This is a very neutral, natural order.

But other orders are possible depending on emphasis:

• U nas w domu stoi router obok monitora.
• Obok monitora stoi router.
• Router obok monitora stoi. — possible, but less neutral

Polish word order often changes to highlight new information or contrast. Even when the order changes, the cases help show what each word is doing.

Yes, you could.

• w naszym domu = in our house/home
• u nas w domu = at our place, in our home

Both are correct, but they feel slightly different.

w naszym domu sounds a bit more literal and explicit:

• W naszym domu router stoi obok monitora.

u nas w domu is very common in everyday speech and sounds more conversational and idiomatic.

Yes.

The noun dom changes to domu because it follows the preposition w in a location meaning:

• dom = house/home
• w domu = in the house / at home

Here, w means in, so it takes the locative case:

• w domu
• w szkole
• w pokoju

Be careful: some forms like domu can look the same in more than one case, but in w domu, it is functioning as locative.

It can mean both, depending on context.

In English, Polish w domu often translates as:

• at home
• in the house
• in the home

In your sentence, U nas w domu router stoi obok monitora, the idea is simply that in our home, the router is next to the monitor.

So the exact English wording depends on what translation sounds most natural, but the Polish phrase itself is very standard.

A simple approximate pronunciation is:

oo nass v doh-moo row-ter stoh-ee oh-bok moh-nee-toh-ra

A few useful points:

• u sounds like oo
• w sounds like English v
• stoi is pronounced roughly stoh-ee
• obok has clear vowels: oh-bok
• rz does not appear here, so pronunciation is fairly straightforward

The stress in Polish is usually on the second-to-last syllable:

• do-mu
• rou-ter
• mo-ni-TO-ra

Yes, it is completely natural.

It sounds like a normal everyday sentence describing where something is located in a home. The use of:

• u nas w domu
• router
• stoi
• obok + genitive

all sounds normal and idiomatic in Polish.