A | 到了USB4，不但再次改变命名方式，技术上也变懒了，几乎直接承袭了Intel捐献的雷电3标准，从物理底层到技术规格都如出一辙。 In a cheeky "get well" message posted on his Truth Social platform on Sunday, former US President Donald Trump implied President Joe Biden had dementia rather than a COVID-19 rebound infection.,On the Twitter-like social networking platform, the former president made fun of his successor's re-diagnosis.,Trump's quipped that Biden was "thinking about moving, part time, to one of those beautiful Wisconsin Nursing Homes" before reiterating his claims about the 2020 election fraud.,"Joe Biden's second bout of Covid, sometimes referred to as the China Virus, was sadly misdiagnosed by his doctors. He instead has Dementia, but is happily recovering well," Trump wrote. "Joe is thinking of moving, part time, to one of those beautiful Wisconsin Nursing Homes, where almost 100% of the residents miraculously, and for the first time in history, had the strength and energy to vote — even if those votes were cast illegally.",However, the compassionate former president, 76, wished his rival and successor a speedy recovery.,"Get well soon, Joe!" he concluded the post.,After testing negative for the virus and finishing a five-day course of Paxlovid, the antiviral medication from Pfizer, Biden was released from isolation on Wednesday.,In his announcement on Saturday, White House physician Kevin O'Connor stated that Biden had increased his testing frequency due to the possibility of a return infection. On Tuesday night, Wednesday morning, Thursday morning, and Friday morning, Biden reportedly continued to test negative, but the virus returned on Saturday morning.,Purportedly, Biden has not shown any symptoms of the infection's rebound, and reassured the public that he was feeling well.,Biden’s Back-to-Back COVID Diagnoses Undermine Administration’s Narrative on His Health: ReportYesterday, 13:12 GMT。
B | 新鲜出炉的USB4 v2.0，也不是接口名字，而只是规范命名。从此以后(到下次再改名)，USB接口将统一以传输带宽命名，USB4 v2.0对应USB 80Gbps，USB4对应USB 40Gbps，USB 3.2 Gen2x2对应20Gbps，USB 3.2 Gen2对应USB 10Gbps，USB 3.2 Gen1对应USB 5Gbps……更古老的USB 2.0、USB 1.0保持不变，因为它们的速度太慢了，还停留在Mbps数量级。如果改叫USB 480Mbps，不但麻烦还容易引起误会(你也知道容易误会啊)。所以请注意新接口下的包装标识、接口标识、数据线标识：回到UBS4 2.0或者说USB 80Gbps，它的首要变化自然是带宽再次翻番来到了80Gbps，这得益于新的基于PAM3信号编码机制的物理层架构，同时还有新定义的80Gbps有源数据线。
C | 在特定应用场景中，比如8K超高清显示，USB 80Gbps还可以配置为非对称编码异步传输模式，一个方向可以高达120Gbps，从而足够承载DP 2.0/2.1 UHBR20信号，另一个方向则是40Gbps。
D | 其次，USB 80Gbps升级了数据和显示协议，可以更好地利用带宽，其中数据传输支持20Gbps的高带宽，显示传输则和DP 2.0、PCIe 4.0相互打通，共享PHY物理层，从而一个接口搞定高速数据、显示。当然了，USB 80Gbps依然保持向下兼容，而且只有USB Type-C一种接口形式。
E | 顺带一提，USB Type-C接口规范、USB PD供电规范也已升级，与USB 80Gbps保持同步。
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