It looks like you’re asking for a feature comparison between USB E12 and USB E34 — but these are not standard USB specifications (like USB 2.0, 3.2, or USB4).
While the labels themselves are just markers, the technology behind the headers they represent differs significantly: USB_E12 (Typically Gen 1) USB_E34 (Typically Gen 2/USB4) 10 Gbps - 40 Gbps Common Protocol USB 3.2 Gen 1 USB 3.2 Gen 2 / USB4 Best Use Case Keyboards, Mice, Basic USB Drives External SSDs, 4K Video Editing Power Delivery Standard (up to 4.5W-100W with PD) High (up to 100W-240W) Which One Should You Use? How to Identify Different USB Types: A Brief Guide - Anker usb e12 vs usb e34
Are you currently building a PC and need help identifying which header is which on your specific motherboard? It looks like you’re asking for a feature
USB_E34 (Ports 3 & 4): Refers to the second pair of USB ports. Depending on your motherboard's specific chipset, this header may support the same speed as E12 or potentially a faster standard like USB 3.2 Gen 2, which reaches up to 10 Gbps. Comparison Table USB_E12 (Standard) USB_E34 (Standard) Typical Speed Up to 5 Gbps (USB 3.2 Gen 1) Up to 10 Gbps (USB 3.2 Gen 2) Port Mapping Front Panel Ports 1 & 2 Front Panel Ports 3 & 4 Common Use General peripherals (Mouse, Keyboard) High-speed data (External SSDs) Compatibility Backward compatible with USB 2.0 Backward compatible with USB 2.0 Practical Advice for PC Building USB_E34 (Ports 3 & 4): Refers to the