@AzizaC 

What you need is "5-port gigabit Ethernet unmanaged switch"

To avoid issues with Deco mesh, that networking switch should be of TP-Link brand. 

Any can do, check availability with local retailer or with Internet retailer such as Amazon. 

If you find different TP-Link switch models you like and unsure which to buy, I can help you to choose from. 

  @Alexandre. thank you! 

So will any of these work?

TP-Link LiteWave 5 Port Gigabit Desktop Switch - Plastic Case

TP-Link 5-Port Gigabit Desktop Switch TL-SG105

TP-Link SG1005D 5 - Port Desktop Gigabit Switch

TP-Link 5-Port Switch

SF1005D 5-Port desktop switch

LS1005 TP-Link 5-Port 10/100mbps Desktop Switch

  @AzizaC 

At my house I am using TP-Link SG1005D - this is one of the switches from your list. It is definitely compatible with Deco.

  @Alexandre. Hello again.... So just need a little more help please. Since the splitter thing is on now. My second deco is only giving me speeds of 40 and below. Sometimes 4.. Is this right? Do certain ports have different speeds? 

  @AzizaC 

This switch has gigabit Ethernet ports.

You need to provide more information: how do you measure speeds on Satellite Deco?

Also, how is everything wired to everything? 

  @Alexandre. Hi, just a general speed test on an app. They are connected using cat5 cables

  @AzizaC 

"My second deco is only giving me speeds of 40 and below.  Just a general speed test on an app" - Deco app does not offer Speed Test for Satellite Decos.

1. Please make screenshot of this speed test and post it here.

2. Make screenshot of your Deco mesh (use Show List) in Deco app and post it here, example:

3. Open "second deco" info page in Deco app, make its screenshot and post it here, example:

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Also, what is the speed of your Internet link from ISP?