Flylin M.2 to SATA 3.0 Adapter, 6 Ports M.2 M EKY PCIE3.0 to SATA Expansion Card Adapter, 6Gbps High Speed, ASM1166 Chip, with Smart Indicator, for Mac OS, Windows, Linux

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10Gtek 6-Port PCIe Expansion Card, PCIe x4 to 6xSATA 3.0 (6Gbps) Controller with 6 Cables & Low Profile Bracket, Supports HDD/SSD Storage for Desktop PC‌

comments:

MeteorBlast posted on r/unraid1w

Yes, but it depends on what do you want to do. If you're going for SAS no matter what, then correct, you need something like this.If you're only interested in having more SATA ports to connect your HDDs, then a PCI or M2 SATA expansion can do the same, while consuming a lot less energy.

10Gtek 6-Port PCIe Expansion Card, PCIe x4 to 6xSATA 3.0 (6Gbps) Controller with 6 Cables & Low Profile Bracket, Supports HDD/SSD Storage for Desktop PC‌