usb c alt mode hdmi

Hubs commonly combine an HDMI output with USB‑A ports, additional USB‑C ports, and card readers (SD/Micro SD). Typical combinations shown include dual USB‑A, a Type‑C data port, SD/Micro SD slots, and a USB‑C PD charging input.

Cable lengths range from very short adapter pigtails (a few inches) up to full HDMI cables around 20–30 feet. Adapter pieces typically present a male USB‑C to female HDMI arrangement, while standalone HDMI cables are usually male‑to‑male.

Most listings describe a plug‑and‑play experience with no extra drivers or settings — connect the USB‑C host to the adapter and an HDMI cable to the display.

The adapters in these listings are unidirectional: they send video/audio from a USB‑C host to an HDMI display (host → display), not the other way around.

Hubs show a mix of USB‑A speeds, commonly USB‑A 3.0 (up to 5 Gbps) for high‑speed transfers and USB‑A ports at 480 Mbps for legacy devices.

Some adapters include USB‑C PD passthrough and can deliver up to 100W charging while also providing HDMI video output, allowing the host device to stay powered during use.