Backplane Connectors; External Adapter Connector Pinout - Broadcom 95 Series User Manual

Broadcom 95xx User Guide
Table 10: Adapter Broadcom Cable Use Cases
MPN Type
05-60001-00 SAS/SATA and
NVMe
05-60002-00 NVMe
05-60003-00 SAS/SATA
05-60004-00 SAS/SATA and
NVMe
05-60005-00 NVMe
05-60006-00 SAS/SATA and
NVMe
05-60007-00 SAS/SATA and
NVMe

Backplane Connectors

SFF-8612 or SFF-8654 are the preferred connectors to use for NVMe backplane or multiprotocol backplanes based on
the SFF-TA-1001 universal bay definition.
Backplanes that use OCuLink connectors should follow the PCI Express OCuLink Specification. This pinout is also
equivalent to the SFF-9402 specification recommendations. Verify the backplane connector pinout to make sure you use
proper cabling to the NVMe drive. Refer to the PCI Express OCuLink Specification and the SFF-9402 specification for
backplane NVMe connector pinout information.

External Adapter Connector Pinout

External adapters support SAS and PCIe connections. The PCIe cable specification swaps lanes 0 and 1 compared to the
SAS specification. For PCIe connections, this swap means the external pinout must place lanes 0 and 1 on the same pins
as the JBOF. This swap does not impact SAS connections because lane ordering does not impact SAS designs.
For external PCIe JBOF connections, as defined by the PCI Express External Cabling Specification, the adapter does not
connect REFCLK and PERST#. The adapter only supports an SRIS-capable endpoint, that is, no REFCLK. The JBOF
handles the drive (connected to the JBOF switch) start-of-day reset, hot insertion, and clocking requirements.
The adapter expects a local (single master) two-wire bus connection to the cable or active module's EEPROM. A cable
requires a local EEPROM on each end to identify cable properties, such as length, loss budget, ganging, and so on. The
adapter supports no direct communication to the enclosure over two-wire. SES performs enclosure management.
The following table shows the cable pinout for the cable that Broadcom provides for the external adapter. See
Drawings and Pinouts for drawings and pinouts of each listed cable. Use the drawings if you source your own cables.
Broadcom
Use for backplanes with x4 SFF-8612 connectors with pinouts that follow the SFF-9402 specification.
Specialty cable that provides NVMe connections for SuperMicro Purley backplanes. This cable has
white SFF-8643 connectors to indicate that it must connect to the white SFF-8643 connectors on the
SuperMicro Purley backplanes.
Use for traditional SAS/SATA connections. Usually backplanes designed to support SAS/SATA only or
are double plumbed for U.2 and SAS/SATA drives use SFF-8643 connectors.
Use for backplanes with x4 SFF-8654 connectors with pinouts that follow the SFF-9402 specification.
Enables direct connect from the adapter to a U.2 NVMe drive. Use for proof-of-concept type
applications.
Enables direct connect from the adapter to a U.3 NVMe or SAS/SATA drive. Use for proof-of-concept
type applications.
Use for backplanes with x8 SFF-8654 connectors with pinouts that follow the SFF-9402 specification.
®
Broadcom 95xx PCIe 4.0 MegaRAID
Description
®
and HBA Tri-Mode Storage Adapters
Cable
95xx-MR-HBA-Tri-Mode-UG104
18