Fujitsu M10-4 Service Manual page 280

Figure 9-54 Screws for rear cover
21. Install the eight screws on both sides of the XSCF cable connection ports on
the rear of the CPU memory unit lower.
For the SPARC M10-4 with a FRAME-A CPU memory unit and the SPARC
M10-4/M10-4S with a FRAME-B CPU memory unit, this step is not necessary.
266 Fujitsu M10-4/Fujitsu M10-4S/SPARC M10-4/SPARC M10-4S Service Manual ･ June 2023
A