SSD Enclosure

于是采购了一只 ROG Strix Arion 硬盘盒,ASM2362 主控,花费 ¥279,我知道这个钱可以买个 256GB 的 SSD,但是笔记本用户你知道的。
SSD 用的是 WD SN550,性能够用。旧的硬盘盒是 ACASIS 的,JMS583 主控,做工不行,华强北小作坊的级别。


  • 5Gbps:USB 3.2 Gen 1×1=USB 3.2 Gen 1=USB 3.1Gen 1=USB 3.0,USB 3.2 Gen 1
  • 10Gbps:USB 3.2 Gen 2×1=USB 3.2 Gen 2=USB 3.1 Gen 2=USB 3.1,USB 3.2 Gen 1×2
  • 20Gbps:USB 3.2 Gen 2×2
  • 40Gbps:Thunderbolt 3,Thunderbolt 4,USB4

We now find ourselves in a similar spot with USB 3.2. The newest, fastest version of USB 3.2 offers a max speed of 20Gbps and is called USB 3.2 Gen 2×2. (The 2×2 means it’s the second generation and has two 10Gbps lanes to achieve its maximum throughput of 20Gbps.) The older USB 3.1 has a single 10Gbps channel and is called USB 3.2 Gen 2. Then there’s USB 3.0, which is now called USB 3.2 Gen 1.

All USB 3.2 Gen 2×2 products use the Type-C connector, but not all USB-C ports are USB 3.2 Gen 2×2. A USB-C port can be either 20Gbps USB 3.2 Gen 2×2 or 10Gbps USB 3.2 Gen 2. A USB Type-A port can be 10Gbps USB 3.2 Gen 2, 5Gbps 3.2 Gen 1 or even USB 2.0. USB 4 will clear up this confusion next year, but until then you’ll need to read the fine print on products to ensure you’re getting the expected USB 3.2 connection between your devices.


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