Most frustration here comes from mismatched standards: a fast drive on a slow port, or a charger that can't keep up with the laptop. Match the spec on both ends.
Portable drives and cards
- USB speed: USB 3.2 Gen 2 is 10 Gbps (about 1,000 MB/s in practice); Gen 1 is 5 Gbps. Thunderbolt and USB4 drives go faster but need a matching port.
- SSD vs hard drive: SSDs are faster, quieter and survive drops. Hard drives are cheaper per terabyte for archives.
- Encryption and passwords matter if the drive leaves the house.
- microSD ratings: A2 is for running apps (and Raspberry Pi), V30 / U3 for 4K video. The headline "up to" read speed often needs a specific card reader.
- Follow the 3-2-1 rule: three copies, two kinds of media, one offsite. A drive in a drawer next to the laptop is not a backup if both get stolen.
Hubs and docks
- A hub adds ports and usually runs on USB-C. A dock (often Thunderbolt) adds more bandwidth, more monitors, and its own power supply.
- Monitors: check how many external displays your laptop supports, at what resolution, over a single cable. Base Apple silicon Macs, for example, support fewer than the Pro and Max chips.
- Pass-through charging: the hub keeps a few watts for itself, so a 100 W input may deliver around 85 W to the laptop.
- Ethernet is worth having for video calls and big downloads.
Chargers and power banks
- GaN chargers are smaller for the same wattage.
- Total vs per-port wattage: a 100 W charger with three ports splits that power when more than one device is plugged in. Check the split.
- Power banks on flights: airlines allow up to 100 Wh in cabin baggage without approval, about 27,000 mAh at 3.7 V. Never in checked luggage.
- For laptops, look for USB-C Power Delivery output of 45 W or more.
Wireless chargers and charging stations
- Qi2 is the Wireless Power Consortium's magnetic standard, built on the magnet ring Apple introduced with MagSafe. The magnets line the phone up with the coil, which is what makes 15 W possible. A plain Qi pad charges an iPhone at 7.5 W at most.
- Qi2 15 W vs Qi2 25 W: newer "Qi2.2" chargers reach 25 W, but only on phones that support it, such as the iPhone 16 and 17. An iPhone 12 to 15 tops out at 15 W either way, and the 12 mini and 13 mini at 12 W.
- Android phones mostly lack the magnet ring. Many need a magnetic Qi2 or MagSafe case to hold on and charge at full speed. Check the maker's compatibility list for your exact model.
- 3-in-1 stations add an Apple Watch charger and an earbuds pad. The watch and earbuds positions usually get 5 W, and only some watch chargers do Apple's fast charging.
- Use the included power supply. A weaker USB-C brick is the most common reason a station charges slowly.
- Cases: most stations work through cases up to about 3 mm. Thick, wallet or metal-backed cases weaken the magnets and the charge.
- iPads don't charge wirelessly, so no wireless station will charge one.