Side-by-Side Comparison
USB
USB 2.0 vs. USB-B
Comparing 2 standards across 7 specifications. 7 key differences identified.
Comparing:
USB 2.0
USB-B
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.
USB-B (Standard-B) is the squarish connector historically used on printers, scanners, and external hard drives -- the peripheral-side counterpart to USB-A. A 9-pin SuperSpeed variant with a distinctive stacked upper tab was added for USB 3.0, though USB-C has since displaced Standard-B in most new peripheral designs.
Specification Comparison Table
7 Parameters| Parameter / Spec | ||
|---|---|---|
|
Released
|
April 2000 | — |
|
High Speed
|
480 Mbit/s | — |
|
Backward Compatible
|
Yes (USB 1.x Full/Low Speed) | — |
|
Pin Count
|
— | 4 (USB 1.x/2.0) or 9 (USB 3.0+, stacked SuperSpeed tab) |
|
Standard Base Dimensions
|
— | ~11.1 x 7.0 mm |
|
Reversible
|
— | No |
|
Typical Role
|
— | Peripheral-side port (printers, scanners, external drives) |
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