Expired50% confidenceFactTime unknown
Before the USB standard emerged, printers used parallel ports, keyboards used PS/2 interfaces, and each type of device required a dedicated cable.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
MCP and A2A Protocols Explained: The USB Era of Agent Interoperability
bilibili李太白阿白
Cite This Claim
Stable URI
https://kongchang.com/claim/54787API
curl https://kongchang.com/api/v1/knowledge/claims/54787MCP
get_claim(id=54787)