WI FI

can i buy a stronger internet adapter for my dell Optiplex has 2.0 what about the wi-fi  unit sending the signal

Hi. I'm Brian, an Independent Advisor.

Internet Service Providers offer multiple speeds and charge more for the faster tiers. The ISP I use has offerings that start at 25 Mbs (megabits per second) and go up to 1,000 Mbs. It is the limits imposed by your ISP that truly determine your connection speed.

There are two dominant frequency bands for WiFi: the 2.4 GHz band and the 5 GHz band, each determined by what radio hardware you have in your PC and in the router. Many PCs and routers offer both bands. The 2.4 GHz band is better at penetrating structures and can travel longer distances due to the lower frequency of the signals. It can carry from about 450 Mbs to about 600 Mbs. The 5 GHz band, because of the shorter wavelength, cannot travel as far without degradation and doesn't pass through walls as easily. It can carry about 1300 Mbs. Most routers supporting 5 GHz also support 2.4 GHz.

These are't the only factors, however. The wireless standard used by the router, 802.11g, 802.11n, 802.11ac (WiFi 5), or 802.11ax (WiFi 6), also affects speed. Standard WiFi will produce a net speed that is about half of what your ISP tells you they supply. If your speed is 100 Mbs, expect your WiFi to max out in the 50 Mbs range because the signals go in both directions.

Mesh WiFi systems help this somewhat. They offer better coverage of the area the building covers, but also allow you to use more of the WiFi bandwidth because the mesh points communicate between themselves using a frequency separate from the WiFi frequency your computer is expecting to use so you can get to perhaps 80% or so of the max throughput.

After all is said and done, in my opinion, your ISP is the major limiting factor to how much speed you'll get with WiFi, barring some radio interference or software issues in the WiFi card driver.

7.79

Mbps download

6.48

Mbps upload

13.39 GB used is the amount of used traffic on ur adapter

you can test your internet speed using         https://www.speedtest.net/