Tech Docs
-
Wi-Fi 5 (802.11ac) and Wi-Fi 6 (802.11ax) are two prevalent standards that IT professionals should be familiar with. Wi-Fi 5 (802.11ac): Wi-Fi 5, introduced in 2013, operates exclusively on the 5 GHz frequency band. It brought significant improvements over its predecessor, 802.11n, by offering higher data rates and enhanced performance. The standard supports channel widths…
-
VGA (Video Graphics Array) and HDMI (High-Definition Multimedia Interface) are both used to connect displays to computers, but they differ in signal type, quality, and capabilities. VGA is an older analog interface introduced in the late 1980s that transmits video only. It uses a 15-pin D-sub connector and is prone to signal degradation over long…
-
External storage devices, like USB flash drives, external hard drives (HDDs), and portable solid-state drives (SSDs), are essential tools for storing and transferring data. USB flash drives are compact, portable, and often used for quick file sharing between devices, with capacities ranging from 4GB to 2TB. External HDDs, such as the WD My Passport, offer…
-
Mobile device issues are diverse and may involve power problems, unresponsive screens, charging failures, or connectivity issues. The first step is verifying the basics—does the device power on, is the battery charged, and is the power adapter functioning correctly? A common issue is a dead battery or a faulty charging cable, which can easily be…
-
An OTDR report (Optical Time-Domain Reflectometer report) serves as a vital tool for technicians working with fiber optic networks by offering a non-intrusive method to assess fiber integrity. OTDRs send a series of light pulses down the fiber and measure the light that is reflected back due to scattering or changes in the fiber medium,…
-
Wi-Fi 5, also known by its IEEE standard 802.11ac, was introduced in 2013 and became the dominant wireless standard for high-speed consumer and enterprise networking. Operating exclusively on the 5 GHz frequency band, Wi-Fi 5 offered major improvements over its predecessor, 802.11n (Wi-Fi 4), by introducing wider channels (up to 160 MHz), MU-MIMO (Multi-User, Multiple…
-
Solid-State Drives (SSDs) and Hard Disk Drives (HDDs) are two primary forms of internal and external storage used in desktops, laptops, and servers, each with distinct characteristics. SSDs store data on flash memory chips, offering lightning-fast read/write speeds, lower latency, and greater durability due to the absence of moving parts. They’re ideal for operating systems,…
-
SATA (Serial ATA) hard drives are widely used for internal storage in desktops and laptops, offering a balance of performance and cost for general computing tasks. Introduced as a replacement for older PATA (Parallel ATA) drives, SATA provides faster data transfer speeds and thinner cables for improved airflow within the system chassis. The most common…
-
Thermal printers use heat-sensitive paper and a heated print head to produce images or text, making them ideal for quiet, low-maintenance printing in point-of-sale systems, kiosks, and receipt printers. Unlike inkjet or laser printers, they require no ink or toner, only specially coated thermal paper that darkens when exposed to heat. Because they have fewer…
-
Cat5e (Category 5 Enhanced) and Cat6 (Category 6) Ethernet cables are both unshielded twisted pair (UTP) standards used for wired networking, but they differ in terms of performance, shielding, and signal integrity. Cat5e supports speeds up to 1 Gbps over distances of up to 100 meters and is commonly used in residential networks and small…
-
Power supplies are essential hardware components responsible for converting alternating current (AC) from a wall outlet into direct current (DC) usable by internal computer components. The most common type is the ATX power supply, used in desktops, which typically comes in standard wattage ratings like 400W, 500W, 750W, and up. Power supplies vary in size,…
-
Coaxial cabling is a type of electrical cable used to transmit high-frequency signals, commonly found in applications such as cable television, broadband internet, and radio communication. Its structure includes a central conductor (typically copper) that carries the signal, surrounded by an insulating layer, a metallic shield to reduce electromagnetic interference (EMI), and an outer plastic…
Bitcoin Versus 