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Connectors/cables for Serial Attached SCSI and SATA – Wikipedia

Posted by jpluimers on 2021/05/10

Since I always get confused with SAS and SATA connectors, some tables from Wikipedia:

  • Serial Attached SCSI Connectors- Wikipedia
    Codename Other names Ext./int. Pins No of devices / lanes Comment Image
    SFF-8086 Internal mini-SAS, internal mSAS Internal 26 4 This is a less common implementation of SFF-8087 than the 36-circuit version. The fewer positions is enabled by it not supporting sidebands. SFF 8086.jpg
    SFF-8087 Internal mini-SAS, internal mSAS, internal iSAS, internal iPass Internal 36 4 Unshielded 36-circuit implementation of SFF-8086. Molex iPass reduced width internal 4× connector, 12 Gbit/s capability. SFF-8087 SMC.jpg
    SFF-8088 External mini-SAS, external mSAS, external iSAS, external iPass External 26 4 Shielded 26-circuit implementation of SFF-8086. Molex iPass reduced width external 4× connector, 12 Gbit/s capability. SFF 8088.jpg
    SFF-8470 InfiniBandCX4 connector, Molex LaneLink External 34 4 High-density external connector (also used as an internal connector). SFF 8470.jpg
    SFF-8482 Internal 29 2 lanes This form factor is designed for compatibility with SATA but can drive a SAS device. A SAS controller can control SATA drives, but a SATA controller cannot control SAS drives. SFF-8482 SAS Plug - Bokeh at f22.jpg
    SFF-8484 Internal 32 or 19 4 or 2 High-density internal connector, 2 and 4 lane versions are defined by the SFF standard. SFF-8484 straight connector.jpg
    SFF-8485 Defines SGPIO (extension of SFF 8484), a serial link protocol used usually for LED indicators.
    SFF-8613 (SFF-8643) Internal 36 4 or 8 with dual connector Mini-SAS HD (introduced with SAS 12 Gbit/s) SFF-8643 SMC.jpg
    SFF-8614 (SFF-8644) External 4 or 8 with dual connector Mini-SAS HD (introduced with SAS 12 Gbit/s) SFF-8644 cable.jpg
    Sideband connector Internal Often seen with 1× SFF-8643 or 1× SFF-8087 on the other end – internal fan-out for 4× SATA drives. Connects the controller to drives without backplane or to the (SATA) backplane and optionally, to the status LEDs. Sideband.jpg
    SFF-8680 Internal
    • 1
    • (2 ports)
    SAS 12 Gbit/s backplane connector
    SFF-8639 Internal 68
    • 1
    • (2 ports)
    • SAS 12 Gbit/s backplane connector;
    • revision of the SFF-8680.
    • Also known as “U.2”.[17]
    SFF-8639.jpg
    SFF-8638
    • Four 1x ports at up to 24 Gb/s each;
    • two 2x ports at up to 48 Gb/s each;
    • one 4x port at up to 96 Gb/s.
    SFF-8640
    • Four 1x ports at up to 24 Gb/s each;
    • two 2x ports at up to 48 Gb/s each;
    • one 4x port at up to 96 Gb/s.[18]
    SFF-8681
    • Two 1x ports at up to 24 Gb/s each;
    • one 2x ports at up to 48 Gb/s each.
  • Serial ATA: Cables, connectors, and ports – Wikipedia

    Data

    Standard connector, data segment[42]
    Pin # Mating Function
    1 1st Ground
    2 2nd A+ (transmit)
    3 2nd A− (transmit)
    4 1st Ground
    5 2nd B− (receive)
    6 2nd B+ (receive)
    7 1st Ground
     — Coding notch

     

    • A seven-pin SATA data cable (left-angled version of the connector)

    • SATA connector on a 3.5-inch hard drive, with data pins on the left and power pins on the right. The two different pin lengths ensure a specific mating order; the longer lengths are ground pins and make contact first.

    Power

    Standard

    Standard connector, power segment
    Pin # Mating Function
     — Coding notch
    1 3rd 3.3 V Power
    2 3rd
    3 2nd Enter/exit Power Disable (PWDIS) mode
    (3.3 V Power, Pre-charge prior to SATA 3.3)
    4 1st Ground
    5 2nd
    6 2nd
    7 2nd 5 V Power, Pre-charge
    8 3rd 5 V Power
    9 3rd
    10 2nd Ground
    11 3rd Staggered spinup/activity
    12 1st Ground
    13 2nd 12 V Power, Pre-charge
    14 3rd 12 V Power
    15 3rd

    A fifteen-pin SATA power connector (this particular connector is missing the orange 3.3 V wire)

    Slimline

    Slimline connector, power segment
    Pin # Mating Function
     — Coding notch
    1 3rd Device presence
    2 2nd 5 V Power
    3 2nd
    4 2nd Manufacturing diagnostic
    5 1st Ground
    6 1st

    Micro

    Micro connector, power segment
    Pin # Mating Function
    1 3rd 3.3 V Power
    2 2nd
    3 1st Ground
    4 1st
    5 2nd 5 V Power
    6 3rd
    7 3rd Reserved
     — Coding notch
    8 3rd Vendor specific
    9 2nd

    A 1.8-inch (46 mm) micro SATA hard drive with numbered data and power pins on the connector.

–jeroen

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