That card looks like a standard SATA3 Controller.
It requires a PCIe 2.0 slot to operate at full speed, so on a xw4600 board your only option is the second x16 (graphics) slot because the other two slots are PCIe 1.1 (2.5 Gbit/s).
If high speed is the most important, you should give it a try and see if it works, otherwise...
the built in Intel SATA2 is AHCI compliant (it can run in IDE, RAID or AHCI mode, see F10 BIOS Setup -> Storage options), so any SATA SSD will run fine at 3 Gbit/s.