能否通过SATA数据连接实现USB 3.0传输？

Hey buddy, great question—especially with that awesome project you’re reviving! Let’s dive right in.

First things first: Absolutely, you can make SATA drives work over USB 3.0 (and even faster USB specs)—and it’s a perfect fit for your upgraded ARM SBC setup.

Let’s tie this to your project history. Back when you built that first gadget with USB 2.0, you were limited by the hardware, but now with your 8-core, 16GB RAM SBC packing USB OTG 3.1 Gen 1 and PCIe 3.0 M.2 slots, you’ve got all the pieces to pull this off smoothly.

Here’s how you can make it happen, depending on your setup:

• If your M.2 drives are SATA-based: You can either use a SATA-to-USB 3.0 bridge adapter (if connecting external SATA drives) or, better yet, use your SBC’s PCIe lanes to add a SATA controller HAT/card. Then, using the same Linux USB Gadget framework you already know, you can expose those SATA drives as USB mass storage devices to a connected PC. This time around, USB 3.1 Gen 1 will eliminate the old IO bottleneck, so you’ll get way better performance than your clunky USB 2.0 setup.
• Key kernel prep: Make sure your SBC’s kernel has the necessary modules enabled—usb_f_mass_storage for the gadget functionality, plus the appropriate SATA controller module (like ahci for most modern SATA controllers) and PCIe support. This ensures your system can recognize the SATA drives and map them to the USB gadget.
• Pro tip: Since you’re using USB OTG, double-check that you’re using a proper USB 3.x OTG cable—grabbing a USB 2.0 cable by mistake would bottleneck you right back to those old slow speeds, which would be a total waste of your new powerhouse hardware.

You mentioned fitting two M.2 cards into an enclosure—if those are NVMe drives instead of SATA, the idea is similar (you’d use an NVMe-to-USB bridge), but your core question about SATA-to-USB 3.0 is totally feasible.

This setup should let you pull off all those fancy tricks you loved before—disk cloning, snapshots, etc.—but with the performance boost you’ve been waiting for. Good luck with the project!

备注：内容来源于stack exchange，提问作者Jo-Erlend Schinstad