Chip BIOS FUJITSU ESPRIMO D756, E920, P757, X913-T, PH556, C720, E710, P556-2 

You will need a new bios chip for the following purposes As a backup chip in case the current BIOS Chip is corrupt. As a BIOS upgrade chip for advanced features such as support for newer CPU, larger hard drive, more devices and fix for known bugs.

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