Question i wifi LAN 3 devices to connect-what hardware pls

[ldfart]

pc wlan0, 3d printer and cctv with only rj45 sockets. usb ports occupied. i have one rj45 to usb adapter. modem/router is tp a1200. can i get 2 externally set up wifi dongles fast enough for live streaming video, or without password and router block both from internet? i have a second modem/router, too if it'd deniedvinternet except thu pc, can i block internet to printer and cctvv? os is puppy linux
will this do, pls?
NETGEAR AC600 Wireless USB Mini Adaptor
edit
modem #1 wifi to pc
modemv#2 wired ethernet to 2 dumb devices. needs dongle to make wireless.
will AC600 do if on rj45 to usb adaptor?
thx

 

[Ralston18]

This USB adapter?

AC600

And instead of plugging it into a device USB port you want to plug it into a USB to Ethernet adapter - correct?

The requirement being something like the following line diagram:

ISP === (coax, DSL, Fiber) ===>[WAN port] TP A1200 modem/router ~~~~ wireless ~~~ to 3 devices:

1 ~~~~ >Wireless to Ethernet adapter ---->[ Ethernet Port] pc

2 ~~~~ >Wireless to Ethernet adapter ---->[ Ethernet Port] 3D printer

3 ~~~~ >Wireless to Ethernet adapter ---->[Ethernet Port] cctv

Feel free to edit and correct my line diagram.

You should not need another modem, router, or modem/router as I understand the posted requirements.

You may need some other adapters.

For example:

USB to RJ45

However, the starting point is to ensure that the required connectivity is understood.

Details matter.