Does this take care of catching wi-fi signals? or do i need a wireless usb wi-fi for pc too? thanks

Nothing extra needed. It connects to our laptops, cell phones and printer automatically

Does this router have to be hardwired to the main router if using it to extend coverage in the house?

This router may be sufficient to supply coverage to a fair-sized house, so using it to "extend coverage" may not be necessary. However: This router can be used in either router mode, or access point mode. It does not have a "repeater mode". (A repeater acts as an extension of your regular wireless router. It picks up the wireless signal and essentially acts as a wireless relay. Your device connects to the repeater, which forwards [via wireless] the signal to the main router.) So, you would either have to use it as a replacement router, or put it into "access point" mode. In access point mode, it must have a wired connection to the main router. It will then be broadcasting a different name on the wireless (a different SSID), and your wireless devices would connect to it. The network traffic then flows along the wire to the regular router. In this mode, the RJ45 connections on this TPLink router would act as a network switch, allowing wired devices to piggy-back on the wire directly to the router.

ASIN	B0856PZV6F
Are Batteries Included	No
Best Sellers Rank	#12,346 in Computers ( See Top 100 in Computers ) #236 in Routers
Brand	TP-Link
Color	black
Connectivity Type	Wi-Fi
Customer Reviews	5.0 5.0 out of 5 stars (8)
Date First Available	21 February 2020
Item Weight	323 g
Item model number	Archer C80
Manufacturer	TP-Link
Operating System	Linux
Product Dimensions	21.51 x 11.71 x 3.02 cm; 323.18 g
Series	TP-link AC1900
Voltage	12 Volts
Wireless Type	802.11ac

AC1900 Wireless MU-MIMO WiFi Router - Dual Band Gigabit Wireless Internet Routers for Home, Parental Contorls & QS, Beamforming (Archer C80)

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