Platform Neo Geo

Where is the Work Ram in the 43256 RAM assembly of the Neo Geo 4 slot? I am getting the following errors *Attached And I want to get in

Another glorious Neo Geo MVS beast to be saved #arcade #retrogaming #NeoGeo #AMPS

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neopolis slot NEO GEO MVS Arcade Motherboard Motherboard - Used condition JAMMA Harness