Guide · 6 min read
One charger for the whole desk.
Add up what is actually plugged in at once, add 20%, and buy that number in a single multi-port unit. A 100W four-port charger replaces four bricks, four outlets and the daily hunt for which cable goes where.
Budget the watts first
Multi-port chargers share one power budget, so the only number that matters is the simultaneous total: what genuinely charges at the same time — not everything you own — plus roughly 20% headroom.
| Desk | Simultaneous devices | Peak draw | Buy |
|---|---|---|---|
| Phone-first | Phone + earbuds | ~30W | 45W dual |
| Phone + tablet | Phone 27W + iPad 30W | ~57W | 65W dual or trio |
| Ultrabook desk | Laptop 65W + phone 27W | ~92W | 100W 3–4 port |
| MacBook Pro 14″ desk | Laptop 96W + phone + watch | ~130W | 140W desktop unit |
| Two-worker household desk | 2 laptops + 2 phones | ~180W | 200–240W desktop |
Then read the vendor's port-split table, which decides whether the budget works. A typical 100W four-port unit gives 100W on the top USB-C port alone, roughly 65W + 30W with a second C port in use, and less again with all four occupied. No standard governs these ladders, so two "100W" chargers can behave differently — see USB-C Power Delivery explained.
Why one unit beats four bricks
Outlet count: four bricks means a strip, and wall-wart bodies block adjacent sockets. Thermal headroom: a 100W GaN unit at 60W load runs cooler than a 65W brick pinned at its ceiling — see why chargers get hot. Allocation: one budget flows to whatever needs it, so the laptop gets its full 65W once the phone is full. Standby draw is minor: efficiency rules hold no-load consumption to a fraction of a watt, so four idle bricks cost pennies a year.
- 100W
UGREEN Nexode 100W 4-Port
Enough for an ultrabook plus three small devices, with a published port-split table.
- Class
- 100W total
- Ports
- 3× USB-C, 1× USB-A
- Tech
- GaN
- Best for
- Laptop + phone + tablet
- 140W
Anker Prime 140W Desktop
PD 3.1 with the 28V rail, so a 16″ MacBook Pro fast-charges while the rest of the desk stays powered.
- Class
- 140W total
- Standard
- PD 3.1 / EPR
- Ports
- 2× USB-C, 1× USB-A
- Best for
- MacBook Pro 16″ desks
- 240W
SmallRig 240W 4-Port
Two-laptop desks and camera kit: a 240W EPR budget starves no port.
- Class
- 240W total
- Standard
- PD 3.1 / EPR
- Ports
- 4 ports
- Best for
- Shared or studio desks
Port allocation and cables
Assign ports deliberately and label them once. Put the laptop on the highest-priority USB-C port — usually nearest the edge, named in the manual — because it keeps its full profile as the others fill up. Give the phone the next C port; leave USB-A for a watch dock or keyboard. Avoid hot-plugging mid-charge: renegotiation drops every port to a safe state for a moment before the new split applies.
Use 1m cables at the desk, 2m only where you need reach — longer thin cable means more voltage drop. Above 60W you need a 5A e-marked cable; above 100W an EPR-rated 240W cable end to end (the cable guide, e-marked cables explained).
Wall unit or desktop unit?
Below about 100W, a folding-prong wall charger is fine and travels with you. Above it, a desktop unit with a captive AC cord wins: the mass sits on the desk rather than hanging from the socket, with room for a bigger heatsink and usually more ports. Trade-offs in wall versus desktop chargers; shortlists in best desk chargers and the multi-port hub. If devices sleep at the desk, charging for battery health explains why they are the best candidates for an 80% cap.
FAQ
How many watts do I need for a desk charger?
Add the simultaneous peak draw and about 20% — a laptop at 65W plus a phone at 27W is roughly 92W, so a 100W multi-port unit.
Does a 100W charger give 100W to every port?
No. The total is shared and the split changes as ports fill: 100W on one USB-C port alone, roughly 65W plus 30W with two in use.
Is one multi-port charger better than several small ones?
Usually yes: fewer outlets used, cooler operation at partial load, and power that flows to whichever device needs it.
Why does my laptop slow down when I plug my phone into the same charger?
The charger renegotiated its split to free watts for the new device. Normal behaviour — assign the laptop to the highest-priority port to minimise what it loses.