How do I get more Wired Internet Connections

[CurtisS]

I have PureFiber Internet Gigabit with Technicolor NH20T Modem and Arcadyan Boost 2.1 Routers (Boost 6).  The Boost Routers only have 2 RJ-45 ports. 

I tried running a cable from one of the Boost Routers to a simple switch (8 port D-Link) and the line quit working.  How do I get 4+ wired connections across the room?  Is there a way to enable a switch?

I tried running off both the Boost and the Modem.  No luck with either.