Usb E12 Vs Usb E34 -

Both headers are identical in performance and power delivery. They both provide standard USB 2.0 speeds (up to 480 Mbps).

If you are looking at :

| Component | USB E12 Assembly | USB E34 Assembly | | :--- | :--- | :--- | | | $18 – $35 | $35 – $70 | | Molded Cable (2m) | $22 – $45 | $55 – $120 | | Field-wirable Plug | $25 – $50 | $60 – $140 | usb e12 vs usb e34

: This is the second header, handling the third and fourth connections. Both headers are identical in performance and power delivery

Usually the primary internal header. If you only have one set of front-panel USB ports, this is the default connection point. USB E34 (Ports 3 & 4): Usually the primary internal header

In PC hardware assembly, motherboards often have multiple internal USB headers to provide enough connections for the case's front panel.