Comparison Keychron B6 Pro vs Logitech MX Keys S

— Wired. Connection using a cable with one or another type of connector — most often USB, less often PS/2 or a proprietary plug (see "Connection interface"). Wired keyboards are notable for their low cost and overall convenience — in the sense that they do not require batteries and the operating time is unlimited. However the wire limits mobility; however, given that most often the keyboard is used in close proximity to the computer, this shortcoming cannot be called critical.

— Radio. Wireless connection over the air, usually through a wireless adapter connected to a computer via a USB port. The main advantage of this option can be called the actual absence of a wire; while the communication range is usually several metres, which gives freedom of movement and even allows you to use the keyboard as a "computer remote control". On the other hand, wireless models are much more expensive than wired ones, and their operation requires separate power supply from batteries or a rechargeable battery, the charge of which is limited — accordingly, the continuous operation time is limited. Separately, we note that this option is designed mainly for stationary PCs; if a wireless keyboard is needed for a laptop, it is better to pay attention to Bluetooth models (see below).

— Bluetooth. Another way to wir...elessly connect keyboards. Technically, Bluetooth is based on radio waves, but this technology has its own characteristics, so it is listed separately from the "normal" radio connection (see above). The main one of these features is that many models of modern electronics (almost all laptops and tablets, some PCs, etc.) are equipped with built-in Bluetooth modules, which allows you to connect such keyboards without using additional adapters. In addition, the range of such a connection is officially at least 10 m (in fact, of course, it depends on obstacles, interference, etc.). It is this option that will be optimal if you need a wireless keyboard for a Bluetooth-enabled device.

— Bluetooth / radio. Wireless keyboards that can connect both via Bluetooth and radio. See above for more details on each of these options. Also note here that such a keyboard is usually connected directly to a Bluetooth device (for example, a laptop), and if the computer does not support Bluetooth, you can connect a USB adapter to it and use a radio connection. Thus, the keyboard is as versatile as possible in connection. However, such versatility significantly affects the cost, and is required not so often; so this option is not widely used.

— Bluetooth / radio / wired. Keyboards that support all three connection methods described above. This is the most versatile option, giving the user the freedom to choose for different situations. For example, while playing a game or watching a movie, you can sit in a comfortable chair away from the screen by connecting the device wirelessly, and when typing or surfing the Internet, you can move to the table and use the wire, saving battery power. At the same time, such versatility is not often required and is expensive, so models with this type of connection are not popular either.

A version of the "blue tooth" technology for connecting the wireless keyboard to other devices from the outside as a manipulator. The higher its serial number, the more stable and noise-proof connection is provided. At the moment, Bluetooth v 5 is the most advanced standard in keyboards.

The frequency with which the computer polls the keyboard to determine which keys are currently being pressed. The parameter is measured in Hertz (Hz) - they show how many requests are executed per second. Higher Hertz means keystrokes are detected and registered faster. This can provide an advantage in games and tasks that require the highest possible input speed.

As for specific values, for most ordinary users the standard polling rate of 125 Hz will be quite sufficient. Gaming keyboards can have a frequency from 1000 Hz (keystrokes in this version are recorded every 1 ms), and advanced models for true e-sportsmen - up to 8000 Hz (the reaction time is 0.125 ms).

The number of additional keys provided in the design of the keyboard.

Such keys do not belong to the standard layout and are intended for quick access to specific functions or individual applications — for example, to control the media player or open mail with one click. This function is convenient because commands from additional keys are usually recognized by the system regardless of what is on the screen — thanks to this, for example, you do not have to close the text editor to switch tracks in the player.

Note that in this case we are talking about individual keys that have a strictly defined purpose and corresponding markings. Programmable buttons, the Fn key (see below) and the functions of the main keys implemented through Fn are not taken into account in this paragraph.

The CMD (command) key is an integral attribute of keyboards that are primarily designed to work with Mac OS computer systems. Plays an important role in the quick access service. So, in combination with other buttons, it allows you to open the command line and perform many other actions that are important for a computer system administrator. If we compare keyboards for Mac OS and Windows, then the “CMD” key is an analogue of the system “WIN” button (with the Windows logo), which opens the Start menu.

Similar tasks are assigned to the OPT (option) key. It is intended to be used in conjunction with other buttons to create keyboard shortcuts that enable a variety of additional functions in Mac OS operating systems. Drawing parallels with Windows keyboards, the OPT key is analogous to the Alt button. Typically, this key has the additional designation “⌥”.

Legend application indicates how the Latin characters on the keys are made and how well they will survive years of heavy typing.

— Double-shot. The keycap is molded from two different plastics: the main “body” and a separate legend insert are formed together in a single mold, so the letters don’t wear off or fade at all. This method is ideal for RGB backlighting: if the legend layer is semi-transparent, light passes through the symbols without halos. ABS double-shot is more common (bright glow, pleasantly smooth feel), while the pricier PBT double-shot is rarer and offers higher surface wear resistance. Compared to laser engraving, the lifespan is an order of magnitude higher, and it beats the dye-sub method for backlighting (dye-sub doesn’t shine through). Downsides include cost and sometimes visible seams/thick walls that can affect the click’s sound profile. In practice, these keycaps are in demand for mechanical gaming keyboards, esports arenas, developers, and frequent hotkey typing—where double-shot keeps legends readable for years.

— Sublimation. A method of applying Latin symbols to keycaps where, under heat and pressure, the dye penetrates the top layer of plastic, creating a durable, “absorbed” legend. The print won’t rub off from fingers, resists household cleaners and UV light, preserves a matte texture, and maintains high contrast on light backgrounds, but it doesn’t let RGB shine through the symbols and is limited in palette. Compared to laser...engraving, it offers higher lifespan and readability, and versus double-shot it only loses in shine-through effects. Typical use cases include mechanical keyboards for typing, developers, and office work, where durability, the tactile matte PBT feel, and stable readability over years matter.

— Laser engraving. Burning/removing the top coating layer with a beam to form highly precise symbols. Legends last for years, but over time the fill paint can wear and contrast can drop in high-contact areas. Advantages include thin typefaces, clean contours, RGB compatibility, and low cost. Compared to double-shot, engraving is cheaper and more flexible in design, but not “forever”; versus dye-sub it wins on backlighting, but loses in tactile uniformity and longevity. Typical applications are mass-market office and gaming models with backlighting.

The colour of the backlight provided in the design of the keyboard.

In general, the backlight performs two functions: practical (makes the keys more visible in low light) and aesthetic (gives the keyboard a beautiful appearance). However, it cannot be said that non-backlit keyboards will be unusable in the dark, the light from the monitor will still illuminate the buttons. The simplest version of the backlight is one-colour. In this case, specific colours can be different: for example, white is well suited for general-purpose keyboards (work or home), but other shades can be found in gaming or design models, for example, red, green, blue, purple or orange. If two or three colours are indicated for the keyboard, this may mean either the ability to switch between these colours, or that this model comes in several versions that differ in the shade of the backlight; these nuances should be clarified separately.

The most advanced options are multi-colour and RGB backlighting. Multi-colour systems are called systems in which more than three colour options are provided, sometimes with intermediate shades. And RGB-backlight all...ows you to choose almost any shade at the request of the user; in addition, the possibility of synchronization (see "Illumination with effects") is found mainly in such systems, although single-colour keyboards can also be equipped with other effects.

Features of the cable with which the device is equipped. First of all, it's worth noting the connection interface used in a wired keyboard. Namely:

— USB-A. A standard universal port for connecting peripherals, present in almost all modern computers—from desktop PCs to microcomputers. USB keyboards are the most universal, so this option is the most common today. The main disadvantage of this option is that the USB port occupied by the keyboard might be needed for another peripheral device; however, this problem is easily solved—for example, by using a USB hub or purchasing a keyboard with its own hub (see below).

— USB-C. The USB-C plug is reversible, compact, and universal, so the keyboard easily connects to modern laptops, PCs, and docking stations. There is no difference in delay and functionality compared to USB-A: in both cases, the keyboard is recognized as a common USB-HID, NKRO, and high polling rate do not depend on the type of plug. Mechanically, USB-C is usually more durable for wear (up to ~10,000 insertion cycles compared to ~1,500 for USB-A), and it is also easier to insert "by feel". Compatibility is resolved with a cable or mini-adapter A↔C, which may be included. Bottom line: if you have a free USB-C port—opt for a keyboard/cable with USB-C; if there are few "C" ports or the PC is stationary—USB-A is just as good in operation.

— PS/2. A specialized round-shaped port used for connecting keyboards and mice; modern PCs may have either two ports, one for each, or a single universal port. In any case, this connection method is convenient because all USB ports remain free; this can be important when using a large number of USB peripherals. At the same time, the PS/2 port itself is quite large and not suitable for laptops and other compact equipment, and therefore is found only in desktop PCs. Even in these cases, it is advisable to confirm the availability of PS/2 before purchasing a keyboard with such a plug.

— USB or PS/2. Generally, this means USB keyboards equipped with an adapter for PS/2 ports. The features of both interfaces are described above; here we note that this option is the most versatile, allowing for a choice of connection method depending on the situation. Furthermore, it is convenient because there are relatively few PS/2 models, and it's easier to find a suitable USB keyboard equipped with an adapter. The adapters themselves are inexpensive and do not significantly affect the device's price; naturally, they are also sold separately, although a set is often a more preferable option.

— Brand-specific. Connection using a unique plug that is not among the standard (described above) interfaces and is mainly used in technology from a specific brand, at best in some devices from third-party manufacturers. This option is quite convenient for tablet accessories (see "By Direction").

In addition to connection, the keyboard cable may have additional properties:

— Detachable.... A cable that can be disconnected from the keyboard. Almost all devices with two connection options—wired and wireless—have this feature: in wireless mode, the cable can be removed so that it doesn't get in the way. Although, there are also purely wired devices with such a cable—mainly laptop ones, where the cable is removed for convenience during transport. It is also worth noting that a universal port is most often used to connect the cable, so if necessary, the cable can be replaced with another—e.g., a longer one.

— Braided. The presence of an additional braid on the cable makes it more durable, reliable, and resistant to bends. On the other hand, the braid tends to accumulate dirt and fray with wear; because of this, the cable's casing quickly loses its marketable appearance compared to keyboards without braiding. And such a cord costs more than a regular smooth one.

The battery capacity in the keyboard affects the duration of its operation without recharging and determines how often the device will need to be charged. Although manufacturers usually specify the operating time, the capacity helps to assess the battery's resource under intensive use or when activating additional features such as backlighting.