l have just purchased a new Acer Aspire 5338 laptop with 3Gb of memory and have tried, for the first time today, to plug in a 4Gb Realtec memory stick. The device does not show as a removable drive when I open Computer, although it does show on Device Manager. The stick works fine with my P.C. so it is not a stick problem. A 256Mb stick registers ok. Do I need to adjust any settings i.e. Bios? Acer Aspire 5338 Intel Celeron T3000(1.8GHz, 800Mhz FSB) 3Gb DDR3 Memory Vista Home Premium Regards Gordon P.S. Sorry, that should read 4Gb memory stick.