Upgrading a SATA I Fujitsu 160GB HDD with a new WD SATA II 1TB HDD

WD Internal Drives Desktop & Mobile Drives
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Thanks Hammey for your advice. I checked Toshiba’s site, and saw that my old machine apparently accepts 2.5” Solid State Drives, SATA II & III interface, so I assume that it should also accept WD’s SATA II interface HDD of 750 or 1TB capacity. Disk capacity seems not to be an issue for my aged Satellite. However the “autospeed negotiation protocol” of WD’s HDD Scorpio line, could eventually be an issue for my Satellite’s SATA I controller; I wonder? Which are the WD’s simplest HDD models, of 500GB to 1TB capacity, and which are still in the market, of the SATA II generation, which most probably are back-compatible with the old SATA I controller of my Satellite?