Unverified85% confidenceFactTime unknown
主控芯片决定稳定性和速率：10Gbps盒常用JMS583，20Gbps用RTL9210/JMS586，40Gbps雷电盒用ASM2464PD/JHL7440，其中ASM2464是目前USB4/雷电全速率的主流方案
1
Sources
85%
Confidence
Medium-term (~90 days)
Relevance
-
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Related Claims
Unverified读卡器芯片直接决定速度上限，认准RTS5411/GL3224等USB3.2 Gen1主控，理论速度可达5Gbps；廉价USB2.0芯片(GL823)实际读写仅30MB/s左右，拷贝一张256G卡差几倍时间77% similarUnverified常见USB网卡芯片对应速率：RTL8153=千兆有线、RTL8156=2.5G有线、RTL8811/8812=WiFi5无线、RTL8832/MT7921=WiFi6无线75% similarUnverified传输速率标称需看清：USB 3.2 Gen1=5Gbps、Gen2=10Gbps，很多商品用USB 3.0/3.1模糊表述实为5Gbps，接NVMe SSD想跑满速需认准10Gbps及以上73% similarUnverified接口协议决定实际速度：USB 3.2 Gen1(=USB3.0)理论5Gbps约500MB/s，Gen2达10Gbps约1000MB/s，Gen2x2达20Gbps；买了PCIe SSD却只配Gen1接口是性能浪费，选购时接口协议要匹配盘体速度72% similar
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