Motherboard#2988 (IBM PC 330/350 SERIES (TYPE 6577, 6587)) has been associated to Chip#5669 ((multiple brand) 75185 / 75232 (RS-232 Driver/Receiver) [ST75185C, GD75232, SN75185, DS14185, GD75232, AZ75232, M5232, W83778S, HT6571, AP232, GD75232]) by helencroft

Motherboard#2988 (IBM PC 330/350 SERIES (TYPE 6577, 6587)) has been associated to Chip#4504 (National Semiconductor PC87306) by helencroft