TC4-8 Unified SATA/SAS Signal & Power Cable (Molex-style) - 8" – Avatu Ltd
LSI 9300-8 12Gbps SAS HBA IT mode ZFS FreeNAS unRAID +2* SFF-8643 SATA Cable | eBay
Internal Hd Mini Sas (sff-8643 Host) - 4x Sata (target) Angle Cable, Sff-8643 For Controller, 4 Sata Connect To Hard Drive | Fruugo UK
50cm SFF-8087 to 4x SATA Reverse Cable - SAS Cables | StarTech.com United Kingdom
8 Port 6Gbps SATA PCIe Card Controller - SATA Controller Cards | StarTech.com United Kingdom
My $10 8 port SAS/SATA expander : r/homelab
IO Crest 8 Port SATA III Non-RAID PCI-e x4 Controller Card Supports FreeNAS and ZFS RAID - Includes Mini SAS to SATA Breack out Cables : Amazon.co.uk: Computers & Accessories