# item.guide
Side-by-Side Comparison USB

USB 1.1 vs. USB Power Delivery

Comparing 2 standards across 8 specifications. 8 key differences identified.

Comparing:
USB 1.1
USB Power Delivery
USB 1.1 →

USB 1.1, released in September 1998, was the first widely adopted USB standard -- 12 Mbit/s Full Speed for most peripherals, with a 1.5 Mbit/s Low Speed mode for mice and keyboards. The original USB 1.0 from January 1996 saw little real-world adoption before 1.1 quickly superseded it.

View full USB 1.1 spec sheet →
USB Power Delivery →

USB Power Delivery (USB PD) is a separate negotiation protocol governing how much power flows over a USB-C cable -- independent of the cable's data speed. Standard Power Range tops out at 100W (20V/5A); PD 3.1's Extended Power Range (2021) raised that ceiling to 240W (48V/5A), requiring cables with a built-in identification chip.

View full USB Power Delivery spec sheet →

Specification Comparison Table

8 Parameters
Parameter / Spec
USB 1.1
USB Power Delivery
Released
September 1998 —
Full Speed
12 Mbit/s —
Low Speed
1.5 Mbit/s —
Predecessor
USB 1.0 (January 1996, limited real-world adoption) —
PD 1.0
— 2012 -- up to 60W
PD 2.0
— 2013 -- up to 100W (Standard Power Range, 20V/5A)
PD 3.1 (EPR)
— 2021 -- up to 240W (Extended Power Range, 48V/5A)
EPR Cable Requirement
— Built-in E-Marker identification chip

Other Alternatives to Compare

Compare USB 1.1 vs. Micro-USB → Compare USB 1.1 vs. Mini-USB → Compare USB 1.1 vs. USB 2.0 → Compare USB 1.1 vs. USB 3.2 Gen 1 → Compare USB 1.1 vs. USB 3.2 Gen 2 → Compare USB 1.1 vs. USB 3.2 Gen 2x2 → Compare USB 1.1 vs. USB-A → Compare USB 1.1 vs. USB-B → Compare USB 1.1 vs. USB-C → Compare USB 1.1 vs. USB4 → Compare USB 1.1 vs. USB4 2.0 →