22
Figure 33 25SFF drive backplane
(1) x4 SlimSAS downlink interface 3 (SAS EXP 3)
(2) x8 SlimSAS uplink interface (SAS PORT), managing all drives on the backplane
(3) x8 SlimSAS downlink interface 2 (SAS EXP 2)
(4) x4 SlimSAS downlink interface 1 (SAS EXP 1)
(5) Power connector 1 (PWR 1)
(6) Power connector 2 (PWR 2)
(7) MCIO connector 4 (PCIe5.0 x8)(NVMe 4), supporting NVMe drives 17 and 18
(9) MCIO connector 3 (PCIe5.0 x8)(NVMe 3), supporting NVMe drives 19 and 20
(10) MCIO connector 2 (PCIe5.0 x8)(NVMe 2), supporting NVMe drives 21 and 22
(11) Power connector 3 (PWR 3)
(12) MCIO connector 1 (PCIe5.0 x8)(NVMe 1), supporting NVMe drives 23 and 24
For more information about drive numbering, see "Drive numbering."
PCIe5.0 x8 description:
• PCIe5.0: Fifth-generation signal speed.
• x8: Bus bandwidth.
Front 16E1.S drive backplane
The PCA-BP-16E1S-1U-G6 16E1.S drive backplane can be installed at the server front to support
sixteen 9.5 mm E1.S drives.
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