10The Y255C DELL Optiplex 755 Motherboard Desktop MiniTower GM819 JR271 Main Bd No TPM is a motherboard specifically designed for the Dell Optiplex 755 desktop computer. It is a crucial component that connects various internal components of the computer, such as the processor, memory, and storage, to allow for communication and functionality. This motherboard does not include a TPM (Trusted Platform Module), which is a security component that provides hardware-based security for the computer. It is a reliable and compatible choice for upgrading or repairing a Dell Optiplex 755 system.