Port and connector atlas
Tap a connector to see how many contacts it has, what it is for and where people go wrong. The drawings are schematic, not to scale.
Checked:
USB-C
- Contacts
- What it is for
- Watch out
How it calculates
The drawings are our own schematic sketches – they show the shape and the layout of the contacts, not exact dimensions. Contact counts are well-known technical facts; interface versions and speeds are checked against the sources below.
On the PCIe 8-pin connector, the detachable “+2” part is marked on the drawing with a vertical line and squares in portrait orientation. On the 12V-2×6, the four sense contacts are drawn as smaller squares above the main row.
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Notes and sources
- USB-IF: USB 3.2 Specification – 5, 10 and 20 Gb/s speeds
- USB-IF: USB Charger (USB Power Delivery) – up to 240 W
- EUR-Lex: Directive (EU) 2022/2380 – the common charger (USB-C)
- HDMI Forum: HDMI Forum Releases Version 2.0 (up to 18 Gb/s)
- HDMI Licensing Administrator: Ultra96 and Ultra High Speed HDMI Cable (96 and 48 Gb/s)
- VESA: VESA Releases DisplayPort 2.1 Specification (UHBR10/UHBR20, DP40/DP80 cables)
- SATA-IO: Fast Just Got Faster: SATA 6Gb/s (white paper)
- Hardware Busters (analysis of the Intel specification): ATX v3.1 & PCIe CEM 5.1 – the 12V-2×6 connector (secondary source)
We opened every link above and compared the figures on 12 October 2026. The pages belong to their publishers and can change after that date.