Rack server case JMCD 12S4, with the 12 Gbit/s SAS backplane, with CW-NAS-W680

What you provided is likely the model of the hard drive backplane included in the chassis—probably a 12G backplane that supports SAS. If my understanding is incorrect, please clarify in your next reply.The motherboard’s U.2 (SFF-8643) interface outputs native SATA signals. You can either use an SFF-8643-to-4×SATA adapter cable or a hard drive backplane that directly converts SFF-8643 to SATA. Please note that the motherboard does not support SAS, as SAS controllers are very expensive and therefore were not included in the design or support roadmap.Regarding memory compatibility:The system supports standard SO-DIMM or UDIMM modules.It only supports DDR5 memory—DDR4 is not compatible.Recommended memory specifications: DDR5 UDIMM, 1R (single-rank), speed 5600 MT/s or 4800 MT/s.Suggested brands: Samsung or Crucial (Micron).Maximum capacity: Up to 32 GB per module, for a total of 128 GB (with 4 slots).

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The Wiki has a dedicated section for the W680, where they document solutions to common issues: https://doc.x86pi.cn/#/docs/fs/VXCQuW3XQSosL8RRJL2ixp/235

BIOS： https://drive.x86pi.cn/BIOS/5.NAS-BIOS/W680-NAS

Drives： https://drive.x86pi.cn/driver/5.NAS/W680

Supplementary Information –

   LED Digital Tube Diagnostic Code ：https://doc.x86pi.cn/#/docs/fs/VXCQuW3XQSosL8RRJL2ixp/399

      Beep Code Table： https://doc.x86pi.cn/#/docs/fs/VXCQuW3XQSosL8RRJL2ixp/438

     Common Troubleshooting Methods：https://doc.x86pi.cn/#/docs/fs/VXCQuW3XQSosL8RRJL2ixp/442

Unfortunately, we currently only have a Simplified Chinese version of the wiki. Once the Simplified Chinese version is fully developed, we may release versions in multiple languages. Until then, you’ll need to translate it yourself for your use.