General Knoppix support for those who've read the FAQ at the Wiki
ORICO Multi Bay RAID Hard Drive Enclosure USB 3.0/ Type-C For 2.5/3.5'' HDD SSDs
$164.99
Dell KMCCD PERC H730 MINI MONO 1GB RAID CONTROLLER W/Battery
$26.99
Adaptec - ASR-7805 6Gbs SAS- PCI EXPRESS 3.0 X8 -1GB Cache RAID Controller Card
$34.98
Yottamaster 5-Bay RAID Hard Drive Enclosure USB C, External Aluminum USB C3.1
$164.99
LSI MegaRAID 9361-8i 12Gbps PCIe 3 x8 SATA SAS 3 8 Port RAID + BBU & CacheVault
$39.00
Inspur LSI YZCA-00424-101 Raid Card 12Gbps HBA Controller Low Profile 9300-8i IT
$15.98
Dell PERC H330 PCIe 3.0 x8 RAID Storage Controller 04Y5H1 High Profile
$13.99
DELL PERC H310 RAID Controller with Cables, OHV52W, 6Gb/s SAS SATA PCIe x8
$19.95
LaCie 5BIG NETWORK 2 5-bay RAID HDD Bay [ SEE DESCRIPTION ]
$119.99
Yottamaster 5 Bay RAID Hard Drive Enclosure Type-C B For 2.5" 3.5" SATA HDD SSDs
$140.99