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What are 300M, 450M, 1200M, 2100M routers?


Where do these numbers come from?

First of all, let's talk about standards. From advent of WLAN to present, we have experienced many technical standards, from beginning of 802.11b to later 802.11a, 11g, and then 802.11n and 11ac. The speech of these standards also leads to an increase in wireless transmission speed.

What are 300M, 450M, 1200M, 2100M routers?

Let's talk about frequency. WLANs typically use two frequencies: 2.4 GHz and 5 GHz. Most routers on market are dual-band routers that can support two frequency bands at same time.

Finally, let's talk about speed. The unit of measure for 150M, 300M, and 450M is bit/s. Typically, this is a router that supports 802.11n and can only support one frequency band at a time. The speed difference is due to number of antennas.

The last two are dedicated 1200M and 2100M routers that support 802.11ac standard. It is designed to support two frequency bands for parallel data transmission, and then two speeds are summed:

1200M=300Mbps(2.4GHz) + 867Mbps(5GHz);

2100M=300 Mbps (2.4 GHz) + 1733 Mbps (5 GHz).

These numbers are actually maximum network speed that can be achieved with all of router's wireless resources enabled. As a rule, these are extreme values, and signal must be very clean. In a real environment application, interference from wireless signals to reality omnipresence is usually out of reach for a variety of reasons.

Last sentence:

1. The 5GHz signal decays quickly, and usually wall can be almost enough, so this speed can only be maintained within visible range, and actual test effect is poor, so it is not recommended to consider it at present. ;

2. Currently, many electronic devices do not support the 802.11ac standard, so be careful when choosing.