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For 240W USB‑C charging, get a cable explicitly rated USB‑C EPR 240W / 48V 5A and ideally USB‑IF certified.

Best simple recommendation

Apple 240W USB‑C Charge Cable — 2 m
- Supports up to 240W charging - Good build quality - Easy to find - Note: data transfer is only USB 2.0 speeds, so it’s mainly a charging cable

If you also want fast data/video

Look for a USB4 40Gbps 240W USB‑C cable, such as: - Cable Matters USB‑IF Certified 240W USB4 Cable - Anker USB4 240W USB‑C Cable - UGREEN 240W USB4 Cable

These support high-speed data/display in addition to 240W charging.

What to check before buying

Make sure the listing says: - 240W - 48V/5A - EPR - E‑marked - Preferably USB‑IF Certified

Also, your charger and device must both support 240W; the cable alone won’t increase charging speed.