Electronics Glossary: 25 Terms for Cables, Hubs, and Chargers
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by Verpakkingdeals.nl
6 min reading time
USB-A, 3.0, 5 Gbps, PD, mAh and DPI: 25 terms from an electronics product page explained in plain language, with what they mean for your choice.
You're looking for a simple cable or a hub for your desk, and the product page is full of acronyms: USB-A, 3.0, 5 Gbps, PD, mAh, DPI. For those who work with it daily, it's a shopping list; for everyone else, it's noise that ultimately leads you to choose something based on the photo. You only notice it when the package arrives and the plug doesn't fit. Below are the 25 terms you'll most often encounter with cables, hubs, chargers, and accessories — in plain language, always asking: what does this mean for what you're buying?
Plugs and connectors
USB-A is the classic rectangular plug found in laptops, TVs, and car radios. It only fits one way. USB-C is the smaller, oval model you see on newer phones and laptops, which you can insert both upside down and right side up. They are not interchangeable: always check the connector of the device you want to plug it into first.
Male and female means plug and connector. A male-to-female cable extends an existing connection, such as the 2-meter USB 3.0 extension cable (€ 9.95): one end goes into your computer, and the other end connects to the device that previously wasn't long enough.
AUX is the analog 3.5 mm jack you know from headphones. If a speaker, like the stereo speaker with phone holder (€ 14.95), says “USB and AUX,” you can connect it in multiple ways — handy if you use old and new devices interchangeably.
USB 2.0 and USB 3.0 are generations of the same standard. The difference is speed: 3.0 transfers data many times faster than 2.0. For a mouse, keyboard, or a light, it doesn't matter — they transfer hardly any data. For an external hard drive, a memory card, or transferring photos, it can save minutes to hours.
Gbps stands for gigabits per second: how much data can pass through per second. In the title of the 4-port USB 3.0 hub with switches (€ 14.95), it says 5 Gbps; that's the speed of the USB 3.0 generation. A chain is only as fast as its slowest link: if you connect a fast drive to a 2.0 hub, the hub dictates the speed.
A hub and a charging station look similar — both are small blocks with multiple ports — but they do different things. A hub splits one port of your computer into multiple and transmits data and a little power. A charging station plugs into a wall socket and is solely for charging, with more power per port. If you want to charge four phones, you need a charging station, such as the 8-port USB charging station with Fast Charge and PD (€ 14.95). If you want to connect a mouse, keyboard, and card reader: a hub.
PD stands for Power Delivery, a standard for faster charging via USB-C. Fast Charge is the general term for fast charging. Important: fast charging only works if your device, your cable, and your charger all support it. One weak link and you'll just charge at normal speed.
mAh (milliampere-hour) indicates how much charge a battery can store. More mAh means longer use and usually more weight. A 3000 mAh power bank (€ 14.95) is a pocket-sized emergency ration for on the go; for a weekend without a power outlet, you'll want something larger.
V, A, and W — volt, ampere, and watt — describe voltage, current, and power. The main thing to remember is: the higher the wattage of a charger, the faster it *can* charge, provided your device can handle it.
Operation and convenience
Ports are simply the connections on a hub. Don't just count what you're currently using, but also the stick or cable you occasionally plug in — four ports fill up quickly.
Switch per port means you can turn each connection on and off separately. This is more than a gadget: you can turn off a device without unplugging it, and truly power down devices that continue to draw current. See the 4-port USB 2.0 hub with individual switches (€ 9.95).
LED indication is a light that shows whether a port is active. Handy, but sometimes too bright in a bedroom — check this for models like the 7-port USB 2.0 hub with LED (€ 28.95). RGB goes a step further: colored lighting that often changes color, such as with the 10-port USB hub with RGB lighting (€ 24.95). Purely cosmetic, which is fine as long as you know it.
Plug & play means: plug it in and it works, without installing software. DPI is found on mice, such as the BattleTron gaming mouse (€ 19.95). It stands for the number of steps the sensor registers per inch of movement: higher means the cursor reacts faster to a small movement. Not automatically better — it's a setting that needs to suit you.
Batteries and protecting your cables
AAA and AA are the familiar sizes; R03 is the technical designation for AAA, as with the Dynamic Energy AAA batteries, 16 zinc 1.5 V (€ 5.95). Zinc-carbon is the cheaper type that works perfectly in low-power devices, such as a remote control or clock; the Panasonic AAA zinc, 4 pieces (€ 9.95) also falls into this category. Alkaline lasts longer in devices that demand more. And a button cell is the flat round battery from scales and keychains.
Finally, a term you won't find on any packaging but that destroys most cables: strain relief. The point where the cable enters the plug is the weakest point, and that's where it kinks. Cable protectors, set of 4 (€ 1.95) slide over it. For wireless earbuds, an anti-loss cord (€ 2.95) does the same kind of job, and a silicone accessory set with carabiner (€ 7.95) keeps the case safe in your bag.
Choosing in three steps
First, check the connection of the device it needs to plug into: USB-A or USB-C. That determines half of your choice.
Determine if you're transferring data or just need power. Data: 3.0. Just power: a charging station, not a hub.
Count your ports and add one. If you buy exactly enough, you'll be buying again within a year.
If you're unsure if something will fit your laptop or phone? Email us at info@verpakkingdeals.nl with the brand and type of your device and what you want to connect to it, and we'll help you check before you order.
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