RE200 WiFi Range Extender 2.4 GHz, 5 GHz 750 Mbps Wifi Speed Dual Band Internal Antenna Ethernet (Cable Broadband)(White)

The maker's exact model code, including any hardware revision such as v2 or v3. Revisions of the same name can differ in chipset and memory, which changes what third-party firmware will run.

The Wi-Fi generation. Both the router and the device must support a generation to use its speed, and an older laptop connects at its own generation no matter what the router supports.

Wi-Fi 4 (n)

2009 generation, 2.4 GHz only in most units. Adequate for browsing, slow for large transfers.

Wi-Fi 5 (ac)

Adds the faster, shorter-range 5 GHz band. Still the most common standard in use.

Wi-Fi 6 (ax)

Handles many simultaneous devices far better than Wi-Fi 5, which matters more than raw speed in a busy home.

Wi-Fi 6E

Wi-Fi 6 plus the 6 GHz band, which is uncongested but has shorter range and needs a 6E client device.

Wi-Fi 7 (be)

Adds wider channels and lets a device use several bands at once for lower latency.

How many radio bands the unit runs. 2.4 GHz travels furthest and through walls; 5 GHz and 6 GHz are faster but shorter range. Extra bands mostly help by giving mesh units a private channel to talk to each other.

The maker's combined speed label, such as AX3000. It adds together the theoretical maximums of every band, so no single device ever sees that number; use it to rank models within one brand, not as a real-world speed.

Whether the router can talk to several devices at once rather than taking turns rapidly. It helps most in homes with many simultaneous streams.

Whether the router can split a channel among several devices in one transmission. Introduced with Wi-Fi 6, it reduces lag in crowded networks more than it raises peak speed.

How many independent data streams the radios can send at once. More streams raise the ceiling when devices also support them, which most phones do not beyond two.

Whether the router supports the current Wi-Fi encryption standard. WPA3 resists offline password guessing in a way WPA2 does not.

A Wi-Fi 6 router with 100 Mbps ports cannot deliver a 300 Mbps connection over cable. This is the most common mismatch in the category.

The floor area the maker claims the unit covers, measured in open space. Indian walls of brick and concrete cut this heavily, so treat it as an upper bound rather than a promise.

How mesh units talk to each other. Sharing a band with your devices roughly halves throughput at each hop; a dedicated band or a cable avoids that penalty.

How smoothly a device hands over between mesh units as you walk around. Without these, phones cling to a distant unit until the signal nearly drops.

Whether the aerials are hidden inside or stick out. Detachable ones can be replaced with higher-gain versions; internal ones look tidier and usually cover slightly less.

Whether the router can run a separate network for visitors that cannot reach your own devices.

Whether the router installs its own security updates. Routers are rarely checked by hand, so automatic updates are the main thing keeping a home network patched.

Height x width x depth in millimetres. Worth checking against the shelf or cabinet the unit has to sit in, since tall antennas need clearance.

Whether the unit has fixings to hang on a wall, which usually improves coverage over sitting it low on a shelf.

How much electricity the unit uses. A router runs continuously, so this is a small but permanent addition to a monthly bill.

A link to the maker's own specification page for this exact model and hardware revision. It is the source a disputed fact here should be checked against.

Which revision of the maker's spec page these facts were read from, as a date or version. Makers quietly edit spec pages after launch, so this records which wording was in front of us.