# item.guide
Side-by-Side Comparison USB

USB 1.1 vs. USB 2.0

Comparing 2 standards across 6 specifications. 6 key differences identified.

Comparing:
USB 1.1
USB 2.0
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 The original USB 1.0 from January 1996 saw little real-world adoption before 1.1 quickly superseded it.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 2.0 →

USB 2.0, released in April 2000, added a 480 Mbit/s High Speed mode on top of USB 1.x's rates -- a 40x jump that made USB viable for external hard drives and other high-throughput peripherals for the first time. It remains the fallback data rate on many budget cables and low-power devices today.

View full USB 2.0 spec sheet →

Specification Comparison Table

6 Parameters
Parameter / Spec
USB 1.1
USB 2.0
Released
September 1998 April 2000
Full Speed
12 Mbit/s —
Low Speed
1.5 Mbit/s —
Predecessor
USB 1.0 (January 1996, limited real-world adoption) —
High Speed
— 480 Mbit/s
Backward Compatible
— Yes (USB 1.x Full/Low Speed)

Other Alternatives to Compare

Compare USB 1.1 vs. Micro-USB → Compare USB 1.1 vs. Mini-USB → 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 Power Delivery → 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 →