The package includes a thermal pad, a Phillips screwdriver, a user manual, and a couple of cables. Well, it’s a rectangular sleeve and not a box. And you can read its specifications at the back portion of the box. Some of the highlighted features are printed on the front portion of the box. The Yottamaster USB4.0 NVMe SSD enclosure came in a small box similar to the M.2 NVMe SSD enclosure we reviewed before. Yottamaster USB4.0 NVMe Enclosure is available on here. You’ll have to plug it to, at least, a USB3.0 port for it to work. By the way, despite its “wide compatibility”, the SO3-C4 is not compatible with USB 2.0. On top of that, the device is also plug and play meaning no need to install additional drivers. Thanks to the two controllers, the SO3-C4 is not only compatible with the USB4/3 interface, but also Thunderbolt 3/4 as well. It is the industry’s first chip to fully saturate the USB 3.1 Gen2 10Gbps bandwidth. It has the ability to create an external device to achieve more than 1000MB/s in performance. The JMS583 is a USB 3.1 Gen2 to PCIe/NVMe bridge controller. The Yottamaster USB4.0 M.2 NVMe enclosure uses Intel JHL440 Thunderbolt 3 controller paired with JMicron’s JMS583 chip. But during my tests, it does offer promising speeds with a few caveats. Also, don’t let the “40Gbps” label throw you off because that’s only the theoretical transmission rate and not the actual speed. Thunderbolt 4 is not similar to USB4.0, although they use the same USB Type-C interface. When I was testing this USB4.0 enclosure, I had to research more about the technology used on this enclosure and its true or native speed.
It’s also based on USB4.0 protocol, but it’s backward compatible with USB3 and it’s also compatible with Thunderbolt 3/4. Based on the sales page, the USB4.0 NVMe Enclosure, or SO3-C4, can reach up to 2,700MB/s sequential read speed and up to 1,400MB/s sequential write speed. Yottamaster doesn’t seem to have a proper product page or marketing page for their USB4.0 M.2 NVMe Enclosure, but most of the details can be read from Amazon’s product page. Yottamaster USB4.0 M.2 NVMe SSD Enclosure (SO3-C4) Review
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