Hard Disk Drive Option Type P8 (M500-05) (SP 5300/5310 Only)
SM 2-95 D255/D256/M281/M282
3. Remove the screw from the rear side of the upper cover [A].
4. Lift the upper cover [A] by releasing the two hooks, and then put it on the mainframe
so that you can access the bracket [B] on the right side of the machine.
5. Remove the bracket [A].