100W e-marked USB-C cable

100W USB-C Power Delivery is 20V × 5A. Passive USB-C cables top out at 60W (20V/3A); anything above 3A needs an electronic marker (e-marker) rated for 5A. USB-IF labels certified C-to-C cables 60W or 240W — a 60W-marked cable will cap a 100W charger.

Why 100W needs an e-marker

USB Type-C / Power Delivery: a 100W contract is 20 volts at 5 amps. Cables that carry more than 3A must include an electronic marker chip so the charger and laptop negotiate the higher current safely. Without that chip, the link stays in the 3A / 60W class even if the brick is rated 100W.

USB-IF’s cable and connector program requires USB-C to USB-C cables in the certification program to be labeled 60W or 240W (see usb.org/cable_connector, accessed 7 Sep 2026). Shop the label on the cable, not marketing copy that only says “fast charge.”

Apple fast charge and cables

Apple Support 102378 (fast charge your MacBook Air or MacBook Pro) lists a USB-C charge cable or MagSafe 3 cable with the appropriate adapter. For 16-inch MacBook Pro (November 2023 and later), Apple lists the 240W USB-C Charge Cable with the 140W USB-C Power Adapter for fast charge.

Apple’s shop listing for the 240W USB-C Charge Cable (2 m), part MYQT3AM/A, states it supports charging up to 240W. That is a cable, not a charger — pair it with a brick that can deliver the watts you need (see 100W and 140W).

When you need which cable

Facts from manufacturer and standards pages — not a laptop wattage shopping table.

• Need 60W-labeled USB-C to USB-C cable When Charging at or under 60W (20V/3A). Passive / 3A cables are enough for many 30W–65W adapters. Skip for A single-port 100W PD contract — the 60W label caps you at 3A.
• Need 240W-labeled (5A e-marked) USB-C to USB-C cable When 100W or higher USB-C PD (20V/5A and above). USB-IF’s 240W cable class covers 5A e-marked C-to-C. Example Apple 240W USB-C Charge Cable 2 m (MYQT3AM/A) — shop listing supports charging up to 240W.
• Need USB-C to MagSafe 3 cable When MacBook Air / Pro models that charge over MagSafe 3. Apple 102378 pairs MagSafe 3 with the appropriate adapter for fast charge. Vs USB-C charge cable MagSafe 3 is magnetic latch + Mac-side connector. A USB-C charge cable plugs into the Mac’s USB-C / Thunderbolt port. Both can fast-charge when the adapter and cable rating match Apple’s table — see MacBook Pro 16 140W and MacBook Pro 14.
• Related Charger pages Links 100W GaN, 140W, how to pick, MacBook Pro 16 140W, MacBook Pro 14

Price check status — 1 Nov 2026

1 Nov 2026 update: Amazon US buy-boxes were re-read 1 Nov 2026 (~9:29pm ET, headless Chrome, en-US, ZIP 10001; no bot check). Main price = Amazon’s Regular Price / featured Buy New. B0G1T3H97Y ($39.99 regular / $25.99 Prime) and B0DFCH3C4W ($89.99 regular / $79.99 Prime) show an explicit Prime-exclusive lower price. B0CZ6LXL8R also shows one ($69.99 regular / $59.99 Prime, first seen 26 Oct). B0B2MM1W65 $15.99 and B09C5RG6KV $29.99 print regular only (no Prime bracket). Deal prices change fast — open the Amazon page for the live price. Apple, UGREEN and Anker product pages were re-read 1 Nov 2026 (~9:29pm ET, US, headless Chrome): UGREEN Nexode 100W 4-port (SKU 40737) still $54.99 (the $39.99 sale ended 26 Oct); UGREEN Nexode Air 45W still on sale at $15.99 (regular $24.99); every Apple, UGREEN and Anker dollar matched. Apple replaced its 70W and 140W adapters on 28 Oct (new AC Connector 2 models; the old product pages now return Page Not Found), so Apple Buy links now go to the new 70W MKFP4AM/A ($59.00) and 140W MKFQ4AM/A ($99.00) listings, both Add to Bag tonight.

Public cart prices loaded 7 Sep 2026. No third-party cable SKUs invented here.

Where to buy

Buy links sit on each price card above (Apple cables; charger context links to /100w/). We may earn a commission if you buy through those links; it does not change the price you pay. See the full disclosure.

No ranking. We do not invent Anker / UGREEN / Amazon cable ASINs or prices on this page. Related: USB-C to MagSafe 3 cable, 100W, 140W, how to pick, MacBook Pro 16 140W, MacBook Pro 14.