American Megatrends 87 Series, User Manual

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Enterprise-IV EISA VLB Motherboard User's Guide
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Step 10 Install Adapter Cards
Type of Adapter Card Slots
VL-Bus Bus Mastering 32-bit Local Bus Adapter
Cards
Slots 6 and 7
EISA 32-bit Bus Mastering Cards Slots 1 - 6
EISA 32-bit Non-Bus Mastering Cards Slot 7
Standard 8-bit XT- and 16-bit AT-compatible
Cards Slots 1 - 7
EISA Adapter Cards
EISA adapter cards have different fingers on the edge connecters than ISA adapter cards. The EISA
expansion slots have two rows of contacts, one below the other. AN ISA (AT-compatible) Adapter Card can
be inserted into the EISA connector only far enough to make contact with the upper row of contacts. The
longer fingers on EISA adapter cards allow contact with the second row of contacts. See the following
graphic.
When installing EISA adapter cards, make sure that they snap in twice and are fully seated in the EISA
expansion slot. If the card makes contact only with the upper row of contacts, it cannot function properly.