Building a higher-current card, or card+host combination? Technically, M.2 connectors are rated at 0.5 A per pin, so, M-key with its nine 3.3 V pins would result in 4.5 A max – that said ...
The 5-pin connector supports single-phase AC charging ... CCS Combo 1 and Combo 2 connectors. Credit: Mliu92, CC-BY-SA-4.0 CCS stands for Combined Charging System, and uses “combo” connectors ...
A small round connector for accepting the pin-shaped plug from certain phone ... See: Headphone Jack (3.5mm) 2.5mm connectors are still common for TTY devices for the hearing impaired.