Backplanes: server models with 2.5-inch front drive baysThis section provides backplane cable connection information for server models with 2.5-inch front drivebays.Before you startEnsure below parts are removed before starting cable routing for front backplanes.• Top cover (see “Remove the top cover” on page 277)• Air baffle (see “Remove the air baffle” on page 70)• Fan cage (see “Remove the system fan cage” on page 269)Power cable connectionsThe server supports the following 2.5-inch drive backplanes:• 8 x 2.5-inch SAS/SATA backplane• 8 x 2.5-inch AnyBay backplane (also used as an 8 x 2.5-inch NVMe backplane when only NVMeconnectors on the backplane are cabled)• 24 x 2.5-inch SAS/SATA expander backplaneFor connectors on each drive backplane, see “Drive backplane connectors” on page 281.Figure 293. Power cable connections for the 8 x 2.5-inchSAS/SATA/AnyBay/NVMe backplanesFigure 294. Power cable connections for the 24 x 2.5-inchexpander backplaneFrom To From To1 Power connector onbackplane 11 Onboard: backplane 1power connector1 Power connector 1 onbackplane1 Onboard: backplane 1power connector312 ThinkSystem SR665 V3 User Guide