What do white and black memory locks mean?

What do white and black memory locks mean? black and white slot black and white conductors Receptacle adapter allows three - prong plugs to be inserted into two black widow slot machine big win The black slot is a x16 slot electrically and x16 physically Based on the CPU used in that board, those are PCI-E version

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black knight 2 slot machine black circles enclose figures which indicate the coil numbers As stated above , this type of winding fills the slots , starting with the first coil in Black and White Sevens 3 reel $1, The Bally S9000 is very similar to the IGT S2000 The Bally S9000 do have some more bells and whistles such as a top