PC Quick ID Guide

8 Bit ISA Bus - 8 MHz Expansion Card + Motherboard Connector

16 Bit ISA Bus - 8 MHz Expansion Card + Motherboard Connector

32 Bit EISA Bus - 8 MHz Expansion Card + Motherboard Connector
(has two rows of connectors)

VESA Local Bus 32 Bit 33 MHz Expansion Card + Motherboard Connector

PCI Bus 32 Bit 66 MHz Expansion Card + Motherboard Connector
(has opposite offset from all other cards in relation to card slot openning)