Yes, the 330 series drives are backwards compatible with SATA I, Aka SATA 1.5Gbit/s. There are a couple of threads here and in other forums where people are describing a links speed negotiation bug when connected to the older Nvidia MCP79 chipset (that should connect as SATA II / 3Gbit/s, but instead connects at SATA I / 1.5Gbit/s). That bug is not relevant to you, but it proves that the drive can operate at 1.5Gbit/s
References:
http://www.newegg.com/Product/Product.aspx?Item=N82E16820167122 (Click Feedback tab and search for "nVidia MCP79")
http://communities.intel.com/thread/28764 (The thread is about the 520 drives, but they use the same controller)
Does not work with my KX18DS-ProII(nforce2 SPP + nforce2 MCP RAID), 320 SSD works fine however(2x RAID0), Vertex3 does not work also, so it is probably SandForce controller issue.
Also does not work in FS Amilo a1667g/a3667g (VIA K8T890 + VT8237R) cause of the bug in VT8237R, probably can be replaced with VT8237R Plus, which fixes SATA negotiation bug.
