If a laptop lives on your desk, buy a dock: the Anker 8-in-1 Docking Stationdrives two HDMI monitors, charges the laptop back over the same cable and adds Ethernet, which is the whole one-cable workflow. If you have a desktop PC and simply ran out of USB ports, buy a powered hub instead — the UGREEN 7-in-1 gives you seven ports with its own 24W supply and costs a fraction as much. The question is not which device is better. It is whether you need video and power, because that is the entire difference.
The confusing part is the middle of the market, where a USB-C “hub” with an HDMI socket and power passthrough is functionally a small dock, and a “dock” with no video output is functionally a hub. The labels on the boxes are marketing. Three capabilities are not.
Difference 1: does it drive a display?
A plain USB hub carries data and nothing else. The UGREEN 7-in-1 on this page says so in its own spec sheet: data only — no video output and no host charging. Plug a monitor into it and nothing happens, because there is no display controller and no DisplayPort Alt Mode path through it.
A dock takes the DisplayPort signal your laptop sends over USB-C and splits it to HDMI or DisplayPort sockets. That is a different silicon problem and it is where the cost goes. It also inherits the host's limits: Windows machines usually extend across both outputs, while many Apple-silicon Macs mirror instead of extending on a dual-HDMI dock. Both picks here carry that caveat in their specs, and the dual-monitor dock roundup goes through it host by host.
Difference 2: does it charge the laptop?
This is the second cable a dock removes. The Anker 8-in-1 hub passes up to 100W through to the host (about 15W of which the hub itself uses), so one USB-C cable carries display, data and charging in both directions. A plain hub does the opposite: it either draws power from the host or takes its own barrel-jack supply to run its ports, and sends nothing back.
That matters more than it sounds. If a dock cannot deliver enough wattage for your machine, the laptop slowly discharges while plugged in — a failure that looks like a battery fault rather than a dock problem.
Difference 3: where does the power come from?
A bus-poweredhub takes everything from the host port and splits the available current between its ports. The USB 3.0 specification allots 900 mA per port, and a bus-powered hub does not create more — it divides what it is given. Plug in two portable drives and a webcam and something drops off.
A poweredhub has its own adapter: the Plugable 7-port ships a 36W supply and gives every port its own 900 mA, with ports 1 and 7 able to reach 1.5A for charging with BC 1.2 signaling. A dock is always powered, because it has to be — it is feeding the laptop. If a hub keeps disconnecting, this is almost always why; our USB hub troubleshooting guide walks it through.
So which one?
Laptop plus external monitors: dock. Nothing else collapses to one cable.
Desktop PC that ran out of ports: powered hub. Your PC already has display outputs and a power supply; you are buying ports, not a bridge.
Laptop plus one monitor, used occasionally:the middle option — a USB-C hub with HDMI and PD passthrough. Cheaper than a dock, enough for one screen.
Two computers sharing one screen: neither. That is a KVM question, and two computers, one desk lays out the four ways to do it.
Inside the hub category there is a second fork worth settling: powered or unpowered, which decides whether a drive will stay connected.
There is a third option neither of these covers: the monitor itself acting as the dock. USB-C monitor vs docking station is that comparison.
What each one actually does
| Capability | Plain USB hub | USB-C hub with HDMI | Docking station |
|---|
| Adds USB ports | Yes, the most per dollar | Yes, a few | Yes |
| Drives a monitor | No | One | Two or more |
| Charges the host | No | Yes, pass-through | Yes |
| Wired network | No | Usually | Yes |
| Own power supply | Only if powered | No - uses the host cable | Always |
| Travels in a bag | Yes if bus-powered | Yes | No |
Three traps in the middle of the market
“Supports 4K” without a refresh rate. Plenty of cheap USB-C hubs do 4K at 30Hz, which is visibly bad for a desktop. The Anker hub here publishes 4K at 60Hz; if a listing will not state the Hz, assume 30.
Pass-through wattage is not what reaches the laptop.The hub keeps some. Anker says about 15W, which is unusually candid — so a 100W supply delivers roughly 85W to the machine. Check that figure against your laptop's own charger rating.
Two HDMI sockets do not guarantee two desktops. On many Apple-silicon Macs a dual-HDMI dock mirrors rather than extends unless the dock carries DisplayLink. Both dual-display picks on this site state the behavior, and USB-C vs Thunderbolt docks explains why Thunderbolt sidesteps it.
Bus-powered or powered, decided
Bus-poweredis fine for keyboards, mice, dongles and flash drives — low-draw devices that fit inside the 900 mA per port the specification allows. It is the right choice for a laptop bag.
Powered is necessary for anything with a motor or a radio: a portable hard drive, a 4K webcam, an audio interface, a phone you want to charge quickly. The 36W on the Plugable and the 24W on the UGREEN exist for those devices.
If you are already buying a dock, the hub question usually disappears — a dock is a powered hub with a display controller attached. Where it does not disappear is under the desk, with the hub roundup and the Thunderbolt dock roundup covering each side at more depth than a head-to-head can.
