I would recommend you just bring the SATA connections to a spare PCI slot and mount up a eSATA port board like this [https://www.monoprice.com/product?c_id=104&cp_id=10407&cs_id=1040707&p_id=7638&seq=1&format=2|2 Port Internal SATA to eSATA Bracket] Then just plug in an external eSATA drive case like [https://www.startech.com/HDD/Enclosures/2-Bay-External-RAID-Enclosure-Black~S3520BU33ER|SB 3.0/eSATA Dual 3.5” SATA III Hard Drive External RAID Enclosure w/power supply & fan]
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I would recommend you just bring the SATA connections to a spare PCI slot and mount up a eSATA port board like this [https://eshop.macsales.com/item/NewerTech/MPQXES2|NewerTech
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eSATA Extender Cable Adapter] Then just plug in an external eSATA drive case like [https://www.startech.com/HDD/Enclosures/2-Bay-External-RAID-Enclosure-Black~S3520BU33ER|SB 3.0/eSATA Dual 3.5” SATA III Hard Drive External RAID Enclosure w/power supply & fan]
That way you have a neater setup and you don't need to worry about the power supply and you can then double up the your 2 SATA ports into 4!
I would recommend you just bring the SATA connections to a spare PCI slot and mount up a eSATA port board like this [https://www.monoprice.com/product?c_id=104&cp_id=10407&cs_id=1040707&p_id=7638&seq=1&format=2|2 Port Internal SATA to eSATA Bracket] Then just plug in an external eSATA drive case like [https://www.startech.com/HDD/Enclosures/2-Bay-External-RAID-Enclosure-Black~S3520BU33ER|SB 3.0/eSATA Dual 3.5” SATA III Hard Drive External RAID Enclosure w/power supply & fan]
That way you have a neater setup and you don't need to worry about the power supply and you can then double up the your 2 SATA ports into 4!