A NIC contains a 64-bit unique address that is used to identify it inside a system and possible some OTP (One-Time Programmable) EPROM. The unique address is not used for anything by SGI software. However, the OTP memory contains important information on the device containing the particular NIC: | A NIC contains a 64-bit unique address that is used to identify it inside a system and possible some OTP (One-Time Programmable) EPROM. The unique address is not used for anything by SGI software. However, the OTP memory contains important information on the device containing the particular NIC: |