Main Board SIS661GX / 964L FXC Acer P/N MB.P2309.001, MBP2309001 Supports Skt 478 Intel® Pentium® 4 processor, up to 3.2GHz, 400/533MHz system bus Supports Skt 478 Intel® Celeron® processor up to 3.2GHz, 400/533MHz system bus Supports 266/333/400 DDR expandable up to 2GB Chipset: SiS 661GX + 946L NEW. 30 Day Warranty. For Acer Aspire SA60 & SA80. Acer Power S260 & S280