USB मानक
सभी USB मानक संस्करण स्पीड, सुविधाओं, और संगतता के साथ।
USB standards define data transfer speeds, power delivery, and protocol capabilities for Universal Serial Bus connections. The progression from USB 1.0 (1.5 Mbps, 1996) to USB4 Version 2.0 (80 Gbps, 2022) represents a 53,000x speed increase. USB Power Delivery has evolved alongside, reaching 240W (Extended Power Range). Each version maintains backward compatibility, though optimal performance requires matching cables, connectors, and host controllers.
USB4 v1.0
7/10Based on Thunderbolt 3 technology, delivering up to 40 Gbps with tunneling for PCIe, DisplayPort, and USB data. USB-C only.
USB4 v2.0
9/10Doubles USB4 bandwidth to 80 Gbps symmetrical (120 Gbps asymmetrical). Supports DisplayPort 2.1 and PCIe Gen 4 tunneling.
USB 1.0
1/10The original USB specification at 1.5 Mbps (Low Speed) and 12 Mbps (Full Speed). Introduced plug-and-play connectivity to replace serial/parallel ports but saw limited adoption.
USB 1.1
1/10Refined USB 1.0 with improved reliability and interrupt/isochronous transfer support. The version that launched USB into mainstream adoption for keyboards, mice, and printers.
USB 2.0
3/10The first widely adopted USB standard, supporting 480 Mbps throughput. Still used for keyboards, mice, and basic peripherals.
USB 3.2 Gen 1
5/10Formerly USB 3.0 / USB 3.1 Gen 1. Delivers 5 Gbps, a 10x jump over USB 2.0. The baseline for modern external storage.
USB 3.2 Gen 2
6/10Formerly USB 3.1 Gen 2. Doubles Gen 1 to 10 Gbps. The sweet spot for portable SSDs and docks.
USB 3.2 Gen 2x2
4/10Uses dual 10 Gbps lanes for 20 Gbps aggregate throughput over USB-C only. Relatively rare — most manufacturers jumped to USB4.