Wireless without modem or with modem?

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I'm using cable broadband internet (by which i'm accessing Tom's Hardware now). There is one ethernet (RJ 45) coming from over my house to get internet access. The ISP made some changes to my laptop and made a connection, so that this cable without any router can be used only in this laptop. I decided to buy a DSL router (by what means I found it as DSL router is by speedtest.net - both up and down are same). Now coming to the wireless router selection, I came across two kinds - Wireless with modem & without modem. Which one should I buy?
 
Solution
OK, thanks. That's the magic info I needed.

To share internet, you'll need a wireless router with an ethernet WAN port, like this.

You then connect an Ethernet cable between your cable modem and the WAN port on the router, and another Ethernet cable between one of the LAN ports on the router and the LAN port on your laptop.

You'll need to make a note of the PPP information in your laptop if present (if not, find out if there's any static IPs or anything), then set it to DHCP.

Then enter the PPP info or static IP into the router, and it should all work.
Normally it´s connected like:
ISP -> Cable TV connection in your house -> cable modem with only one RJ45 plug -> laptop

:wahoo: This is getting straight !! This is the exact setup.

the first thing to know, is it possible to deactivate the integrated modem inside your AN-1020-21 TYPE-II
I don't know, because it's from a friend who doesn't know tech stuff much.

is there another device between laptop and wall plug?
NOPE.

 


No, RJ-45 into the LAN1 port, turned the router ON, the wifi and LAN1 LEDs blinked, then the wifi signal with warning triangle in laptop.
 


It's the one on the right of your picture with the black wire.



You didn't answer the question. What do you normally do?
 


I know the types of RJ jacks, I don't have the RJ-11 jack.
To answer the question, (note I said dumb while saying), it didn't go into the RJ-11 port (the black wire port in the picture, so plugged into LAN1 - I know it won't work)
 
OK, thanks. That's the magic info I needed.

To share internet, you'll need a wireless router with an ethernet WAN port, like this.

You then connect an Ethernet cable between your cable modem and the WAN port on the router, and another Ethernet cable between one of the LAN ports on the router and the LAN port on your laptop.

You'll need to make a note of the PPP information in your laptop if present (if not, find out if there's any static IPs or anything), then set it to DHCP.

Then enter the PPP info or static IP into the router, and it should all work.
 
Solution
The same router is what Raven also recommended. But I can't select 2 answers at a time, so voted him up. You just reduced my work for tomorrow 😀 Anyway, I'll get the router and then get along with the PPP, DHCP stuff (I came across these once, but I don't remember - catching those stuff will be easy I guess).

 
[strike]Those aren't ADSL or DSL routers. They're just wireless routers. No modems.[/strike] Thanks for the edit.

I wouldn't really worry too much about getting something faster, unless you want to do internal file sharing. You can get way more than 1Mb/s over an N150 router, even in a fairly crowded environment.