CPU installation

In this article, we will discuss the important points about how to install the CPU in the slot of the socket. For a detailed step-by-step description of how to disassemble the system unit, remove the motherboard, and remove the CPU, check out the article about installing the motherboard.

The CPU is a fragile part of the system and can be easily damaged. It is important not to bend the pins of the processor when installing it. The CPU's pins can get bent under the influence of your fingers.

The processor must be taken carefully by its edges.

Removing the CPU

Every motherboard manufacturer has a specific socket.

To remove the AMD processor, you have to pull out the socket lever. The pins inside the socket shift and release the processor.

To remove the Intel processor, press the socket lever, push the lever to the side and then lift it with the pressure frame.

Installation

The CPU will not be physically installed into the socket if it is not positioned properly. CPU keys can help to prevent incorrect installation.

The triangle keys are located on the corner of the CPU and the corner of the socket. They must be aligned for proper installation.

In addition to these keys, there are special indentations on the CPU board that ensure that the CPU cannot be installed incorrectly in the socket.

Installation of the motherboard

Compatibility

Before you purchase a motherboard, it is important to read the specifications of the computer case. The specifications will tell you which case and motherboard size (Standard ATX, Mini-ITX, Micro-ATX, and others) are compatible. Please refer to the computer case manufacturer's official website for technical specifications.

Replacing the motherboard

You will need:

1. Flathead screwdriver and Phillips head screwdriver
2. Clean tissue and alcohol to clean components (or alcohol wipes)
3. Thermal paste
4. Hexes (maybe)

Sequence of steps to replace the motherboard

In case you are replacing the motherboard and not installing a new one, you need to:

1. Turn off the power supply and disconnect the power lead.
2. Disconnect all wires on the backside of the computer case.



3. Remove the cover of the system unit. To do this, unscrew the screws on the back of the case and slide the cover to the left. It is easy to detach from the case. If you have a glass cover, it is screwed on the edges with four screws. If you have a fan installed in the system unit cover, you will need to remove it.



4. It is recommended that you take a picture of all the connectors before disassembling the computer components to not forget to connect anything when reassembling.
5. Disconnect the wires that power the video card (if your video card supports the optional power supply). Unscrew the fixing screws. Press the latch on the PCI-e connector and pull it out to remove the video card.
6. Disconnect the motherboard power and fan power, HDD power, USB power, and others.



7. If necessary, remove the power supply unit. To do this, unscrew the locking screws on the back of the system unit. Removing the power supply to replace the motherboard is not always necessary.



8. Disconnect the memory cards. To do this, simultaneously press the locking plastic tabs on the sides of the card.



9. To remove the motherboard from the case, you need to unscrew the fixing screws. Different motherboards have a different number of screws.





10. Remove the heatsink from the CPU. To do this, unscrew the fixing screws or unclip the fixing clips. The mounting of the heatsinks differs from manufacturer to manufacturer.
11. Remove the CPU. To do this, bend the metal catch, open the cover, and gently pull out the CPU.



12. After removing the heatsink, you must clean the old thermal paste from the joint between the heatsink and CPU. Then, when installing the motherboard, apply the thermal paste onto the CPU using one of the methods described in the article on applying thermal paste.



Installation of the motherboard

Preparing

The necessary screws to secure the motherboard are provided with the computer case.

To install the motherboard in the case, metal stands are used to raise the motherboard above the case. This is necessary to prevent the motherboard from coming into contact with the case.

Before installing the motherboard, make sure that all motherboard standoffs are in place. Otherwise, the motherboard will lose its stability and sag under the cooler's weight.

Installation

You need to follow the same steps as when replacing, only in reverse order. Remember that it is better to connect the uncomfortable connectors first, and after that, cover them with a large cooling heatsink and a video card. Be careful of small things, and don't lose any screws.

External connectors and connectors of a personal computer

An interface is the boundary through which information is transmitted. In this case, it is the boundary between the computer jack and the wire connector.

Power cable connector and on/off button of the power supply

The IEC connector cable is used to connect the PC.

• Main external connectors of the personal computer

1. PS/2 port for connecting a mouse and keyboard.
2. USB port.
3. Serial port. This port allows you to connect your computer to an uninterruptible power supply, satellite receivers, cash registers. You can also use this port to connect two computers on the same network.
4. VGA port. This is an analog connector for connecting monitors according to the VGA video interface standard.
5. Microphone input.
6. Line Input. This is a jack for low frequency audio signals. For example, the music center.
7. An input for computer speakers.
8. Connector for Internet cable.
9. Parallel port. It is needed to connect various peripheral devices.
10. Game MIDI-port. This port is used to connect an analog game console or music synthesizer / MIDI keyboard / MIDI controllers

1. Connecting Cable for the PS/2 port
2. USB Connector Cable
3. Serial Port Connector Cable
4. Connecting cable to VGA port for the monitor

5, 6, 7. Mini-jack connectors for audio devices

8. Twisted pair cable to connect to the Internet
9. Cable to connect the parallel port
10. Cable to connect to the game MIDI-port

• Connectors and cables for HDMI and DVI

• Connectors and cables for additional interfaces

1. USB-B interface connector and cable
2. Micro-USB interface connector and cable
3. USB-B Micro interface connector and cable
4. USB Type-C interface connector and cable
5. Thunderbolt interface connector and cable

Uninterruptible power supply

The main function of this device is to provide uninterrupted power to your computer or other devices during a power outage.

Working Principle

The device provides uninterrupted power from its built-in rechargeable battery. This battery generates a direct current, which the inverter converts into an alternating current of the desired voltage.

The computer connected to the uninterruptible power supply is normally powered by the mains and the battery is charged. If there is a power failure due to a power line failure, the computer is switched over to the uninterruptible power supply battery.

1 - Input power from the mains

2 - Charging unit

3 - Battery

4 - Inverter

5 - Automatic switch

6 - Mains filter

7 - Output power from the device to the equipment

The models of such devices are equipped with a light indication and audible alarm, which notifies you when autonomous operation begins.

The uninterruptible power supply autonomy time depends on the battery capacity level. The battery capacity is indicated in the certificate of the device or the specifications on the website of the official manufacturer of the uninterruptible power supply.  A five-minute run time is considered sufficient for the typical user, enough time for saving documents and shutting down the computer.

Types

Redundant uninterruptible power supply

It is a simple and affordable uninterruptible power supply. Its efficiency is about 60%. The network filtering is partial, which means that surges and interference in the network, which deteriorate the quality of the equipment, partially reach your computer.

Such an uninterruptible power supply is inexpensive and suitable for home use together with a PC.

Line-interactive uninterruptible power supplies

This type of uninterruptible power supply stabilizes the mains voltage using a switching device. If the mains voltage drops by more than 20%, the uninterruptible power supply automatically switches on and supplies power to the computer. The function of the switching device is to ensure that the UPS switches on only when the voltage is completely lost, not when it is reduced. Therefore, the output voltage of this type of uninterruptible power supply is stable. The efficiency is approximately 85%.

Double conversion uninterruptible power supply

This is the most reliable of the reviewed devices. The double-conversion technology provides almost 100% protection for the equipment. The current rectifier converts the incoming current from the mains to the direct current and the inverter converts the current back to alternating current. The batteries are installed between the rectifier and the inverter. Using this battery connection, delays when switching to stand-alone mode are minimized because the use of the inverter requires no additional switching.

Gaming Devices

The main difference between a gaming device and an ordinary device is the ease of use, ergonomics, and design. It should be pointed out that more high-quality and durable materials are used in gaming devices because they are subjected to high loads during the game.

Computer Gaming Mouse

The following factors are taken into consideration by the developers when designing a gaming mouse:

• Analysis of a comfortable and ergonomic shape for the user, because gamers may spend a long time keeping the mouse in their hand. At the same time, the hand should not get tired of the mouse and it should not cause any hand diseases. Gaming mice are supplied with special 4-gram mouse weights that increase the mouse weight. Increased mouse weight gives the user a better feel of the mouse;
• High-quality materials. Comparatively, the approximate number of buttons presses before they break down is 5 million times for ordinary mice, and 50 million times for gaming mice;
• Mouse sensor accuracy. DPI (Dots Per Inch) is the number of dots per inch, it means how many dots the mouse sensor can count from the surface. Generally standard for usual mice is 800 DPI, but for gaming mice, this number is up to 12,000 DPI.  The higher this value is, the smoother the mouse cursor moves and the smoother the controller reads the user's hand movements;
• Additional keys. These keys can be located on the sides of the mouse or on top of it. They are necessary for increasing mouse functionality. Additional keys can be set up for any command;
• Bright and memorable design with RGB backlighting.

Computer gaming keyboard

In addition to convenient shape, additional keys, and RGB backlighting, gaming keyboards mainly use mechanical key switches. They increase the lifetime of the keyboard.

Also, some gaming keyboards are equipped with additional USB connectors, as well as ports for headphones and microphones.

The gaming keyboard is characterized mainly by the wired type of connection to the computer. The wireless type of connection can cause delays in data transfer and the batteries in the keyboard can run out at the wrong time.

Audio gaming headset

Manufacturers pay attention to comfort and weight in the design of the audio headset. They use a wider range of sound frequencies and improved noise isolation from external factors

Gamepad

This is the main input device for game consoles, but it is also actively used in conjunction with PCs. The gamepad allows you to control your video game character more fluidly than with a keyboard and mouse, due to the force of the sticks.

Gamepads have several advantages over a keyboard and mouse:

• The vibration creates a deeper immersion in the game;
• Optionally, you can set the output from the monitor to the TV and play with the wireless gamepad from the comfort of your couch in front of the big screen.

Joystick

Game controllers are often called joysticks. However, this input device is designed for playing flight simulation games.

Car steering wheel and pedals

This device is designed mainly for racing games.  Combining the steering wheel, pedals, and a special fixed race seat chair creates the feeling of a real car in a video game.

Wireless modem

A wireless modem is used to access the Internet via cell phone operators' networks.

Description

• It is convenient to use in travel and in any situation where there is no access to a Wi-Fi network. It integrates into ATMs, vending machines, security systems, vehicles, remote control systems, etc.;
• Different mobile network rates can be used;
• Easy to install.

USB modem

It is connected to a laptop or tablet via a USB port. It looks like a flash drive.

It only connects one gadget to the Internet.

Standard Networking

Modems can use different standard networks. They differ from each other in the speed of data transmission and the quality of the received connection.

GSM, GPRS, and EDGE

These are the mobile communication standards for 2G. Data rates range from 14 Kbps to 400 Kbps. On your smartphone, this communication standard is indicated by the letter E.

3G

• UMTS – Data transfer rate is 284 Kbps
• HSPA – Data transfer speed is 1.8 Mbps
• HSPA+ – Data transfer speed is up to 42 Mbps

4G (LTE)

4G has a data transfer rate of up to 300 Mbps, while LTE-A has a data transfer rate of up to 1Gbps.

A 4G-supported modem, in case it cannot catch this standard, switches to 3G, since it automatically supports this standard as well.

5G

This is the new generation of the network, which is just getting started. The speeds can reach 20 Gbps.

Router

A router is designed to distribute incoming Internet signals to multiple consumers: computers, laptops, phones, and other gadgets.

Working Principle

The source of the signal for the router is the Internet service provider with whom you, as a consumer, have a contract. The ISP wire is plugged into a special WAN (or Internet) connector on the router.

Furthermore, the router receives the incoming signal from the source and, using a special routing table, distributes it to several consumers. The routing table prescribes and selects the shortest possible addresses to the connected devices. Internet data from the router is only sent to active devices. If you turn off a gadget connected to the router, the router will stop transmitting data to the address corresponding to that device.

Router buttons and connectors

1 - Power on and off button

2 - Connector for connecting the power supply of the device

3 - WAN (or Internet) connector for the network cable (usually blue)

4 - LAN connectors. These are needed to connect your consumers to the router with a network cable (usually yellow)

5 - Reboot button for the router.

Routers can be equipped with a USB connector. It is designed to connect a USB modem with a sim card to the router, which receives the incoming signal.

Interaction with devices

Consumers can connect to the router wired through the LAN ports and the Wi-Fi radio signal.

The router can usually connect from one to four consumers through the wired connection, depending on the number of LAN ports on the router.

The number of gadget connections via Wi-Fi for one router is limited and depends on the router itself and its data transfer rate. If you connect multiple devices via Wi-Fi, the data transfer rate may decrease. In other words, if the input speed of the router is 300 Mbps, and 15 devices are connected to it and working simultaneously, the data transfer rate to devices via Wi-Fi is reduced to 20 Mbps. It is because the router transmits the same rate to the connected devices at the same time. If there are walls, furniture, doors on the way from the router to the connected devices, these obstacles significantly reduce the bandwidth of the routers.

Router settings

Wireless communication protocols

The wireless network works using the 802.11 communication protocol. This protocol has its own varieties: 802.11b and 802.11g. These operate at 2.4 GHz and have limited speeds from 11 Mbps to 54 Mbps. Higher-performance protocols are 802.11ac and 802.11n. They provide higher speeds and 5 GHz frequencies.

Data transfer rate

This is an important parameter on which the performance of the router depends. The data transfer speed is related to the communication protocol.

The 802.11n standard provides speeds of 600 Mbps (at 2.4 GHz and 5 GHz). The 802.11ac standard provides faster speeds than 1300 Mbps at 5 GHz.

Frequency range

Routers can be single-band and dual-band. Its primary frequencies are 2.4 GHz and 5 GHz. The dual-band router supports both of these frequencies because of the two built-in radio modules. The majority of routers operate on the 2.4 GHz frequency. The 5 GHz frequency is preferred by the modern user because it is relatively less crowded.

Number of antennas

The number of antennas in the router allows you to separate data streams and retain a good data rate. Thus, the number of antennas increases the performance of the router.

Built-in firewall

The built-in firewall controls all incoming and outgoing information traffic and protects your home network from spam.

Encryption support

Encryption means the process of encrypting data, which is intended to protect it. An unauthorized user cannot read encrypted data.

Router encryption protocols are WEP, WPA, and WPA2.

Router operating modes

Standard connection

It is supposed that the router is connected via wire, and the Internet signal is distributed via Wi-Fi or wires from the LAN sockets.

WISP mode

It is supposed that the router is connected to the provider through the air rather than by wire, and the Internet signal is distributed via Wi-Fi or by wires from the LAN connectors.

Repeater mode

It is supposed to have two routers. The first receives the signal over the wire from the ISP and distributes the signal. The second router receives the signal from the first router and distributes it to gadgets via Wi-Fi or wires from LAN sockets. This way can be used when it is not possible to run a cable to the second router or when it is necessary to extend the coverage of the Wi-Fi network.