5,000mAh Power Bank – 2.4A Output USB-A Port – Pocket Power 5K Power Bank (Portable Charger)

2 (two) is a number, numeral and digit. It is the natural number following 1 and preceding 3. It is the smallest and the only even prime number.

Because it forms the basis of a duality, it has religious and spiritual significance in many cultures.

4A or IV-A may refer to :

• 4A, Ararat International Airlines' IATA airline designator
• 4A, a series of Toyota A engine produced by Toyota Motor Corporation (1982-2002)
• 4A, the production code for the 1974–75 Doctor Who serial Robot
• 4A Centre for Contemporary Asian Art, Sydney, Australia
• 4A Engine, a video game engine developed by 4A Games
• 4A Games, a video game development company in Ukraine
• Associated Actors and Artistes of America, also known as 4As, federation of American trade unions
• Calabarzon or Region IV-A, a Region in the Philippines
• Pixel 4a, an Android smartphone
• Vermont Route 4A, a highway in Vermont, U.S.
• Zeolite 4A, a sodium-type molecular sieve

5 (five) is a number, numeral and digit. It is the natural number, and cardinal number, following 4 and preceding 6, and is a prime number.

Humans, and many other animals, have 5 digits on their limbs.

5K or 5-K may refer to:

• 5K resolution, a display resolution with horizontal resolution on the order of 5,000 pixels
• Gnome-Rhône 5K, a radial aircraft engine
• 5000 metres, a long-distance running event in track and field
• 5K run, a long-distance road running competition
• Hi Fly (airline) (IATA airline designator)
• Five Ks in Sikhism, five items that Khalsa Sikhs are commanded to wear at all times
• Sander Kleinenberg Presents 5K, 2010 album by Dutch DJ Sander Kleinenberg
• Nightmare of Eden (production code: 5K), a 1979 Doctor Who serial

A, or a, is the first letter and the first vowel letter of the Latin alphabet, used in the modern English alphabet, and others worldwide. Its name in English is a (pronounced AY), plural aes.

It is similar in shape to the Ancient Greek letter alpha, from which it derives. The uppercase version consists of the two slanting sides of a triangle, crossed in the middle by a horizontal bar. The lowercase version is often written in one of two forms: the double-storey |a| and single-storey |ɑ|. The latter is commonly used in handwriting and fonts based on it, especially fonts intended to be read by children, and is also found in italic type.

In English, a is the indefinite article, with the alternative form an.

A bank is a financial institution that accepts deposits from the public and creates a demand deposit while simultaneously making loans, mobilising saver surplus to deficit spenders. Lending activities can be directly performed by the bank or indirectly through capital markets.

Whereas banks play an important role in financial stability and the economy of a country, most jurisdictions exercise a high degree of regulation over banks. Most countries have institutionalized a system known as fractional-reserve banking, under which banks hold liquid assets equal to only a portion of their current liabilities. In addition to other regulations intended to ensure liquidity, banks are generally subject to minimum capital requirements based on an international set of capital standards, the Basel Accords.

Banking in its modern sense evolved in the fourteenth century in the prosperous cities of Renaissance Italy but, in many ways, functioned as a continuation of ideas and concepts of credit and lending that had their roots in the ancient world. In the history of banking, a number of banking dynasties – notably, the Medicis, the Pazzi, the Fuggers, the Welsers, the Berenbergs, and the Rothschilds – have played a central role over many centuries. The oldest existing retail bank is Banca Monte dei Paschi di Siena (founded in 1472), while the oldest existing merchant bank is Berenberg Bank (founded in 1590).

Charger or Chargers may refer to:

• Charger (table setting), decorative plates used to fancify a place setting
• Battery charger, a device used to put energy into a cell or battery
• Capacitor charger, typically a high voltage DC power supply designed to rapidly charge a bank of capacitors in pulsed power applications
• Whipped-cream charger, a cartridge designed to deliver nitrous oxide in a whipped cream dispenser
• Charger (firearm), a common and chiefly British term for a stripper clip, used in the reloading of firearms
• A war horse
• A type of special infected in Left 4 Dead 2
• The squadron name for US Navy Strike Fighter Squadron VFA-161
• USS Charger
• HMS Charger

Output may refer to:

• The information produced by a computer, see Input/output
• An output state of a system, see state (computer science)
• Output (economics), the amount of goods and services produced
  • Gross output in economics, the value of net output or GDP plus intermediate consumption
  • Net output in economics, the gross revenue from production less the value of goods and services
• Power (physics) or Work (physics) output of a machine
• Dependent variable of a function, in mathematics
• Output (album)

A pocket is a bag- or envelope-like receptacle either fastened to or inserted in an article of clothing to hold small items. Pockets are also attached to luggage, backpacks, and similar items. In older usage, a pocket was a separate small bag or pouch.

A port is a maritime facility comprising one or more wharves or loading areas, where ships load and discharge cargo and passengers. Although usually situated on a sea coast or estuary, ports can also be found far inland, such as Hamburg, Manchester and Duluth; these access the sea via rivers or canals. Because of their roles as ports of entry for immigrants as well as soldiers in wartime, many port cities have experienced dramatic multi-ethnic and multicultural changes throughout their histories.

Ports are extremely important to the global economy; 70% of global merchandise trade by value passes through a port. For this reason, ports are also often densely populated settlements that provide the labor for processing and handling goods and related services for the ports. Today by far the greatest growth in port development is in Asia, the continent with some of the world's largest and busiest ports, such as Singapore and the Chinese ports of Shanghai and Ningbo-Zhoushan. As of 2020, the busiest passenger port in Europe is the Port of Helsinki in Finland. Nevertheless, countless smaller ports do exist that may only serve their local tourism or fishing industries.

Ports can have a wide environmental impact on local ecologies and waterways, most importantly water quality, which can be caused by dredging, spills and other pollution. Ports are heavily affected by changing environmental factors caused by climate change as most port infrastructure is extremely vulnerable to sea level rise and coastal flooding. Internationally, global ports are beginning to identify ways to improve coastal management practices and integrate climate change adaptation practices into their construction.

Universal Serial Bus (USB) is an industry standard, developed by USB Implementers Forum (USB-IF), that allows data exchange and delivery of power between many types of electronics. It specifies its architecture, in particular its physical interface, and communication protocols for data transfer and power delivery to and from hosts, such as personal computers, to and from peripheral devices, e.g. displays, keyboards, and mass storage devices, and to and from intermediate hubs, which multiply the number of a host's ports.

Introduced in 1996, USB was originally designed to standardize the connection of peripherals to computers, replacing various interfaces such as serial ports, parallel ports, game ports, and ADB ports. Early versions of USB became commonplace on a wide range of devices, such as keyboards, mice, cameras, printers, scanners, flash drives, smartphones, game consoles, and power banks. USB has since evolved into a standard to replace virtually all common ports on computers, mobile devices, peripherals, power supplies, and manifold other small electronics.

In the current standard, the USB-C connector replaces the many various connectors for power (up to 240 W), displays (e.g. DisplayPort, HDMI), and many other uses, as well as all previous USB connectors.

As of 2024, USB consists of four generations of specifications: USB 1.x, USB 2.0, USB 3.x, and USB4. USB4 enhances the data transfer and power delivery functionality with

... a connection-oriented, tunneling architecture designed to combine multiple protocols onto a single physical interface so that the total speed and performance of the USB4 Fabric can be dynamically shared.

USB4 particularly supports the tunneling of the Thunderbolt 3 protocols, namely PCI Express (PCIe, load/store interface) and DisplayPort (display interface). USB4 also adds host-to-host interfaces.

Each specification sub-version supports different signaling rates from 1.5 and 12 Mbit/s total in USB 1.0 to 80 Gbit/s (in each direction) in USB4. USB also provides power to peripheral devices; the latest versions of the standard extend the power delivery limits for battery charging and devices requiring up to 240 watts (USB Power Delivery (USB-PD)). Over the years, USB(-PD) has been adopted as the standard power supply and charging format for many mobile devices, such as mobile phones, reducing the need for proprietary chargers.