NEC Versa Sxi Series Service And Reference Manual page 54

Locating the top cover screws on the surface of top cover
A – Screws (3)
B – LED/Button Cable
Disconnect the VersaGlide cable from connector DCN5 on the connector board.
6.
Disconnect the LED/button cable from DCN3 on the connector board.
7.
Lift the top cover off of the system.
8.
Removing the top cover
C – VersaGlide Cable Connector
Disassembly and Reassembly 3-11