Feature-Rich Addonics 4x1 eSATA/USB Port Multiplier Has Integrated Raid Controller - SlashGear
esata port multiplier card - Newegg.com
MB561US-4SC 4 Bay SATA to eSATA Port Multiplier and USB 2.0 Aluminum Removable External Hard Drive Enclosure with 2 Port eSATA Port Multiplier PCI Express Card
NeweggBusiness - iStarUSA ZAGE-D-5SAES-PM eSATA Port Multiplier 1:5 Device Adapter
DP eSATA 6Gb/s 2-Port PCIe
Cheap Mac Pro eSata Solution? Port Multiplier supported or not? | MacRumors Forums
MB561US-4SC 4 Bay SATA to eSATA Port Multiplier and USB 2.0 Aluminum Removable External Hard Drive Enclosure with 2 Port eSATA Port Multiplier PCI Express Card
iStarUSA ZAGE-D-5SAES-PM eSATA Port Multiplier 1:5 Device Adapter | AVADirect