HP Model 743 PC - Manual (Page 49)

2-11
Accessories Installation
GSC Mezzanine Cards
Figure 2-4 Installing a GSC Mezzanine Card - Back View
Installing an HCRX Graphics Board
An HCRX8 or HCRX24 graphics board occupies the same position as the
Expansion Kit adapter. These boards fasten to the 743 in almost the same
way as the expansion adapter, with four DIN screws and two M2.5X6
screws. On an HCRX board, there are two additional small screws located
on each side of the graphics connector that are fastened through the front
panel.
Preliminary Requirements
Perform the following steps before installing an HCRX board on your
Model 743:
1 If the Model 743 is already installed in your system card cage, you must
M2.5x5
screws
M2.5x6 screws