Metal backplate
The presence
of a metal backplate in the design of the motherboard.
The backplate is a special plate located on the back side of the board (that is, on the opposite side from the connection slots). This feature is typical mainly for advanced "motherboards" designed for powerful systems: individual components of such systems (especially cooling) can be very heavy, and installing them directly on the board would be fraught with damage to it. And the metal backplate avoids this: it plays the role of an additional support that removes the main load from the motherboard. At the same time, such a plate is usually made thick and elastic enough to transfer even a very significant weight of components without consequences.
USB 2.0
The number of USB 2.0 connectors provided on the motherboard.
USB connectors (all versions) are used to connect to the "motherboard" USB ports located on the front panel of the case. With a special cable, such a port is connected to the connector, while one connector, usually, works with only one port. In other words, the number of connectors on the motherboard corresponds to the maximum number of front USB connectors that can be used with it.
Specifically, USB 2.0 is the oldest version widely used nowadays. It provides data transfer rates up to 480 Mbps, is considered obsolete and is gradually being replaced by more advanced standards, primarily USB 3.2 gen1 (formerly USB 3.0). Nevertheless, a lot of peripherals are still being produced under the USB 2.0 connector: the capabilities of this interface are quite enough for most devices that do not require a high connection speed.
Wi-Fi
Wi-Fi version (standard) supported by the motherboard Wi-Fi module. The main function of such modules, regardless of version, is Internet access via wireless routers; however, Wi-Fi can also be used to communicate directly with other devices—for example, to transfer content from a digital camera or control it remotely.
Nowadays you can find support for different Wi-Fi standards (up to
Wi-Fi 6,
Wi-Fi 6E,
Wi-Fi 7). The maximum connection speed primarily depends on this nuance. At the same time, different versions also differ in the ranges used; and they are compatible with each other if they coincide in the ranges used. However, wireless modules of modern motherboards often support not only the Wi-Fi standard specified in the specifications, but also earlier ones; It doesn’t hurt to clarify this point separately, but in most cases there are no compatibility problems. However, to use all the features of a particular version, it must be supported by both devices - both the motherboard and the external device.
The list of major versions looks like this:
- Wi-Fi 3 (802.11g). The oldest standard that is relevant today, in its pure form, is found only in frankly outdated boards. Operates at speeds up to 54 Mbps in the 2.4 GHz band.
— Wi-fi 4 (802.11n). Quite a popular standard, which has only recently begun to give w
...ay to more advanced options. Supports both the 2.4 GHz band and the more advanced 5 GHz band, and the maximum data transfer rate is 150 Mbps per channel (up to 600 Mbps with 4 antennas).
— Wi-Fi 5 (802.11ac). Works only on 5 GHz. Initially, the maximum theoretical data transfer rate was 1300 Mbit/s, but since 2016 the 802.11ac Wave 2 standard has been used, where this figure has been increased to 2.34 Gbit/s.
- Wi-Fi 6 (802.11ax). It initially operates on two bands - 2.4 GHz and 5 GHz - but the specification of this standard provides for the possibility of using any operating band between 1 GHz and 7 GHz (as such bands become available). The nominal data transfer speed has increased by only a third compared to Wi-Fi 5, but a number of improvements that increase communication efficiency allow for a significant increase in actual speed - in theory, up to 10 Gbps and even higher.
- Wi-Fi 6E (802.11ax). An improved branch of the Wi-Fi 6 standard with data transfer speeds up to 10 Gbps. The Wi-Fi 6E standard is technically called 802.11ax. But unlike basic Wi-Fi 6, which is named similarly, it provides for operation in the unused 6 GHz band. In total, the standard uses 14 different frequency bands, offering high throughput with many active connections.
— Wi-Fi 7 (802.11be). The technology, like the previous Wi-Fi 6E, is capable of operating in three frequency ranges: 2.4 GHz, 5 GHz and 6 GHz. At the same time, the maximum bandwidth in Wi-Fi 7 was increased from 160 MHz to 320 MHz - the wider the channel, the more data it can transmit. The IEEE 802.11be standard uses 4096-QAM modulation, which also allows more symbols to be accommodated in a data transmission unit. From Wi-Fi 7 you can squeeze out a maximum theoretical information exchange rate of up to 46 Gbps. In the context of using wireless connections for streaming and video games, the implemented MLO (Multi-Link Operation) development seems very interesting. With its help, you can aggregate several channels in different ranges, which significantly reduces delays in data transmission and ensures low and stable ping. And Multi-RU (Multiple Resource Unit) technology is designed to minimize communication delays when there are many connected client devices. USB 2.0
The number of USB 2.0 connectors installed on the back of the motherboard.
Recall that USB is the most popular modern connector for connecting various external peripherals — from keyboards and mice to specialized equipment. And USB 2.0 is the oldest version of this interface that is relevant today; it is noticeably inferior to the newer USB 3.2 both in terms of speed (up to 480 Mbps), and in terms of power supply and additional functionality. On the other hand, even such characteristics are often enough for undemanding peripherals (like the same keyboards / mice); and devices of newer versions can be connected to the connectors of this standard — there would be enough power supply. So this version of USB is still found in modern motherboards, although there are fewer and fewer new models with USB 2.0 connectors.
Note that in addition to the connectors on the rear panel, connectors on the board itself (more precisely, ports on the PC case connected to such connectors) can also provide a USB connection. See below for more on this.
BIOS FlashBack
Motherboards that support
BIOS FlashBack provide the ability to flash or restore the BIOS without a processor, video card or memory. The main purpose of the function is to provide users with the ability to update the BIOS in cases where the current version is incompatible with the installed processor or other computer components, which may lead to the inability to start the system. As a rule, the motherboard provides for this a USB connector for a flash drive and a special button (usually labeled BIOS Flashback) - pressing it initiates the update process.
On a separate line, we note that the BIOS FlashBack function can be called differently depending on the manufacturer: in motherboards from ASRock and Asus - BIOS FlashBack, from Gigabyte - Q-Flash Plus, from MSI - Flash BIOS, etc.
Clear CMOS
Jumper on the motherboard to reset the BIOS memory to factory settings. Its presence will come in handy when a computer malfunctions - when it simply does not turn on or freezes at the startup stage, while it is not possible to enter the BIOS and reset the settings through it.
Note that the
Clear CMOS jumper is often designated by other similar abbreviations: clr cmos, clear cmos jumper, Clear RTC, etc.