I want to convert four motherboard internal SATA ports to eSATA, to attach to up to four drives outside the computer. It is very common to find dual port converters that convert two internal ports to two external ports. The converters normally take up one PCI/PCIe slot faceplate. Does any vendor make a quad converter? I have very limited slot space and I cannot afford two slots to use two of those converters. I am hoping someone makes a single quad converter.