CX2550/60/70 M4 Upgrade and Maintenance Manual  
10.10.3 Installing the GPGPU riser .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 351
10.10.4 Concluding steps   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 351
10.11 Replacing the Power Interface Board (PIB) .  .  .  .  .  .  .  .  .  . 352
10.11.1 Preliminary steps   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 352
10.11.2 Removing the PIB  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 352
10.11.3 Installing the PIB .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 354
10.11.4 Concluding steps   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 355
11 SXM2 extension tray  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 357
11.1 Basic information   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 358
11.2 Replacing SXM2 modules  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 361
11.2.1 Preliminary steps   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 361
11.2.2 Removing liquid cooling (LC)   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 361
11.2.2.1 Removing liquid cooling from SXM2 modules 3 and 4 .  .  .  . 361
11.2.2.2 Removing liquid cooling from SXM2 modules 1 and 2 .  .  .  . 369
11.2.3 Removing the SXM2 module   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 377
11.2.4 Installing the SXM2 module  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 378
11.2.5 Installing liquid cooling (LC)  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 379
11.2.5.1 Preparing the SXM2 modules for LC .  .  .  .  .  .  .  .  .  .  .  .  . 379
11.2.5.2 Installing liquid cooling for SXM2 modules 1 and 2   .  .  .  .  . 379
11.2.5.3 Installing liquid cooling for SXM2 modules 3 and 4   .  .  .  .  . 393
11.2.6 Concluding steps   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 404
11.3 Replacing the SXM2 LC   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 405
11.3.1 Preliminary steps   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 405
11.3.2 Replacing the SXM2 LC .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 405
11.3.3 Concluding steps   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 405
11.4 Replacing the SMX2 Riser (R) .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 407
11.4.1 Preliminary steps   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 407
11.4.2 Removing the SXM2 riser (R)  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 407
11.4.3 Installing the SXM2 riser (R) .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 408
11.4.4 Concluding steps   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 408
11.5 Replacing the SMX2 Riser (L) type 1  .  .  .  .  .  .  .  .  .  .  .  .  . 409
11.5.1 Preliminary steps   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 409
11.5.2 Removing the SXM2 riser (L) type 1 .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 409
11.5.3 Installing the SXM2 riser (L) type 1   .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 410
11.5.4 Concluding steps   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 410
11.6 Replacing the SMX2 Riser (L) type 2  .  .  .  .  .  .  .  .  .  .  .  .  . 411