qǐng liánjiē lùyóuqì hé guāngmāo.

请 makes the sentence polite. In commands, it often works like please in English.

So:

• 连接路由器和光猫。 = Connect the router and the optical modem.
• 请连接路由器和光猫。 = Please connect the router and the optical modem.

It is very common in instructions, service language, and polite requests.

Yes. 连接 is a verb meaning to connect, to link, or to join.

In this sentence, it is the main action word.

A learner should notice that Chinese often uses a single verb directly before the thing being acted on:

• 连接路由器和光猫
• literally: connect router and optical-modem

连接 sounds a little formal or technical, so it fits well in device instructions.

This is a very normal Chinese command pattern:

• 请 + verb + object

So here:

• 请 = please
• 连接 = connect
• 路由器和光猫 = the router and the optical modem

Chinese word order is often similar to English here: polite marker + action + object.

Here, 和 means and.

It joins two nouns:

• 路由器 = router
• 光猫 = optical modem
• 路由器和光猫 = the router and the optical modem

In other contexts, 和 can sometimes feel like with, but in this sentence the most natural understanding is simply and, linking the two devices.

Yes, that is the intended meaning.

Because 连接 A 和 B commonly means connect A and B or connect A with B, the sentence is understood as making the two devices connected to each other.

In a technical instruction, this is perfectly natural.

If someone wanted to be even more explicit, they might say something like:

• 请把路由器和光猫连接起来。

But the original sentence is already clear.

光猫 is a common tech term in everyday Chinese for an optical modem or related fiber internet device.

The 猫 here does not mean the animal cat. It comes from the sound of the English word modem, which was historically borrowed into Chinese as 猫 in informal tech usage.

So:

• 光 = light / optical
• 猫 = from modem in this tech context

That is why 光猫 refers to a fiber-optic modem-type device, not an actual cat.

It does not need 把.

Chinese can often say:

• 请连接路由器和光猫。

This is already grammatical and natural, especially in manuals, setup guides, and instructions.

A 把 sentence is also possible:

• 请把路由器和光猫连接起来。

That version can sound a little more explicit about taking those two things and causing them to become connected, but the original is simpler and very standard.

It sounds very natural in written instructions, manuals, customer service scripts, and setup steps.

In casual spoken Chinese, people may use slightly less formal verbs, such as:

• 请把路由器和光猫连起来。
• 把路由器和光猫接上。

So:

• 连接 = a bit more formal / technical
• 连起来 / 接上 = often more conversational in practical speech

But the original sentence is still completely natural.

Here, 和 is pronounced hé.

So the sentence is read:

• qǐng liánjiē lùyóuqì hé guāngmāo

Learners sometimes get confused because 和 can have different pronunciations in different words or fixed expressions, but in this sentence it is simply hé.

Yes, a few:

• 请 qǐng: third tone
• 连接 liánjiē: second tone + first tone
• 路由器 lùyóuqì: fourth tone + second tone + fourth tone
• 和 hé: second tone
• 光猫 guāngmāo: first tone + first tone

A few specific notes:

• qǐng ends with -ng, not -n
• lián also ends with -n
• 路由器 can be tricky because it has three syllables and changing tones
• 器 qì is a strong fourth tone
• 猫 māo is first tone here, even though many learners may expect something else because of the familiar word 猫

Chinese often does not use articles like a or the.

So 路由器 can mean:

• a router
• the router

and 光猫 can mean:

• an optical modem
• the optical modem

The exact meaning depends on context. In an instruction manual, readers usually understand that it means the specific router and optical modem involved in the setup.

Yes, in many situations you can, but the tone changes slightly.

• 连接 = more formal, technical, written
• 连 = shorter, often more conversational

For example:

• 请连接路由器和光猫。
• 请连一下路由器和光猫。

Both can work, but the original with 连接 sounds especially suitable for device instructions.