Intel D850GB - 3 Overview of BIOS Features; 3.1 Introduction

Intel Desktop Board D850GB/D850GBAL 7
Quick Reference
Installation Steps
1 Installing the AGP Card Retention Mechanism
(D850GB only)
CAUTION
Install the AGP card retention mechanism (RM) only when using an
AGP card with a retention notch (A) as shown in the figure below. Use of
the RM with an unnotched card may impair video operation. See the
Intel Desktop Board D850GB/D850GBAL Product Guide on the CD-ROM
for RM removal instructions.
OM10592
A