380 Upgrade and Maintenance Manual CX2550/60/70 M4
Ê For SXM2 module 1 (A), fasten the four captive screws (see circles) in the
sequence of the numbering (1 to 4) by proceeding as follows:
Ê At first, fasten the four captive screws one by one (1 to 4) by hand
rotating them three turns.
Ê Then, fasten the four captive screws one by one (1 to 4) by hand until the
screws are completely tightened.
Ê Repeat this procedure for SXM2 module 2 (B).
Figure 264: Installing the PLX bracket
Ê If the PLX bracket is present, install the PLX bracket on the PCIe switch 1
(see arrow).