USB-C Hub Ports Explained: HDMI, Ethernet, SD and PD

Quick answer

A USB-C hub's ports each do one job: HDMI or DisplayPort sends video to a monitor, Ethernet gives you a wired network, SD slots read camera cards, USB-A and USB-C ports handle peripherals and drives, and PD (Power Delivery) is the port that feeds power back into your laptop. Match the ports to the devices you actually plug in, and pay attention to whether the hub supports dual monitors or only one.

What does PD mean on a USB-C hub?

PD stands for Power Delivery. On a hub, the PD port is a USB-C input that accepts your laptop's charger and passes that power through to the laptop while the hub is in use. Without it, your laptop runs on battery while the hub powers its own ports, which drains faster during long sessions.

The number next to PD is the maximum wattage the port can pass through, not what your laptop will draw. A 100W PD port can carry up to 100W total, and the hub itself uses a small amount for its own chips, so a 96W laptop charger may deliver slightly less than 96W at the laptop. Check your laptop's required wattage and pick a hub rated at or above it.

HDMI vs DisplayPort on a hub: which should you use?

Both carry video, but they differ in what they support. HDMI is the safer choice for TVs, projectors and most consumer monitors, and it handles audio over the same cable. DisplayPort, when a hub offers it, is more common on high-refresh or higher-resolution desktop monitors and can be easier to daisy-chain on some displays.

The resolution and refresh rate you get depends on the hub and your laptop, not the cable alone. A hub rated for 4K60Hz can drive a 4K monitor at 60Hz, while a 4K30Hz hub caps at 30Hz, which feels sluggish for cursor movement. If you use two monitors, confirm the hub explicitly supports dual displays; many single-HDMI hubs only mirror one screen.

Do you need an Ethernet port on a USB-C hub?

Add Ethernet if you want a stable wired connection for video calls, large uploads, or networks where Wi-Fi is congested. A wired link avoids the random dropouts that Wi-Fi can cause during meetings and gives you a consistent speed for backups and file transfers.

If your desk is already near a router or you mostly work wirelessly, you can skip Ethernet and save money and space. For hybrid workers who move between a home desk and an office desk, a hub with Ethernet is usually worth the extra bulk because it removes one more thing that can go wrong on a call.

What is the SD card slot on a USB-C hub for?

The SD slot reads full-size SD cards from cameras, drones and some audio recorders. Photographers and videographers use it to offload footage without carrying a separate card reader. Many hubs also include a microSD slot for action cameras and phones, which is a different physical size and not interchangeable with full-size SD.

Speed matters here. A hub with SD 4.0 moves photo and video files noticeably faster than an older reader, which saves time when you are dumping a full card after a shoot. If you only occasionally transfer a few files, a basic SD slot is fine; if you offload cards daily, prioritize the faster standard.

How many USB-A and USB-C data ports do you actually need?

Count your permanent accessories first: keyboard, mouse, external drive, webcam, audio interface. That number tells you how many data ports you need before you add anything temporary like a phone or flash drive. USB-A still matters because many keyboards, mice and older drives use it.

For data ports, look at the speed rating. A 10Gbps USB port transfers files roughly twice as fast as a 5Gbps port, which is noticeable when moving large video files or backing up a drive. If you mostly move documents and photos, 5Gbps is usually enough.

Which hub ports do you need for your setup?

Build the list from your devices, not from the biggest port count. A single-monitor desk with a keyboard, mouse and occasional SD card needs far fewer ports than a dual-monitor editing station with wired internet and external drives. Buying more ports than you use adds cost and desk clutter without improving your workflow.

If you are unsure, start with the ports you use every day and choose a hub that covers those plus one spare. You can always add a small adapter later for a rare device, but you cannot add a missing monitor output to a hub that does not have one.

USB-C hub port FAQ

Can I charge my laptop through a hub's PD port?

Yes, if the hub has a PD input rated at or above your laptop's charger wattage. The hub passes power through and uses a small amount for its own ports, so the delivered wattage can be slightly lower than the charger rating. Check your laptop's required wattage before buying a PD hub.

Will HDMI and DisplayPort both work at the same time?

Only if the hub explicitly supports dual displays. Many hubs with one HDMI output can drive only a single external monitor, and adding a second screen may mirror the first instead of extending it. Confirm dual-display support in the specs if you run two monitors.

Is an SD slot worth it if I rarely use a camera?

If you transfer camera or drone cards only a few times a year, a basic SD slot is enough and you can skip paying for the fastest reader. Daily offloads justify a faster SD 4.0 slot. Match SD speed to how often you actually offload cards.

Do I need Ethernet on a hub for video calls?

Ethernet helps most when Wi-Fi is congested or unreliable, giving you a steadier connection for meetings and uploads. If your Wi-Fi is strong and stable, you can leave Ethernet off your list. Choose Ethernet for stability, not raw speed alone.

Port setups in the HyperDrive range

• HyperDrive Next Business USB-C Docking Station (10 Ports): HyperDrive Next Business USB-C Docking Station (10 Ports) supports dual 4K monitors for PC, Mac and Chromebook, includes 10Gbps USB ports, and has a detachable USB-C cable in a slim design. A fit for dual-monitor desks that also need fast file transfers and a cable that can be packed separately for travel.
• HyperDrive Next 6 Port USB-C Hub: HyperDrive Next 6 Port USB-C Hub offers extended 4K60Hz monitor support for Mac, PC and Chromebook, 10Gbps USB ports, and SD 4.0 for faster photo and video transfers. Suited to creators who need one smooth 4K60Hz display and quick SD card offloads without a full docking station.
• HyperDrive Flex 5 Port USB-C Hub: HyperDrive Flex 5 Port USB-C Hub provides 4K monitor support, a 100W Power Delivery USB-C port, and high-speed USB ports, and is available in multiple colors. A compact option for single-monitor setups that still want laptop charging through the hub and a color choice to match the desk.