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IBM 49Y5951 EXP2512 ESM SAS CONTROLLER

$75.79 (Ex. GST)

In stock: 1

IBM 49Y5951 EXP2512 ESM SAS CONTROLLER

• SAS 6 Gbps interface (SAS 2.0)
• Dual external Mini-SAS (SFF-8088) host ports per ESM
• Internal SAS expander for 12 or 24 drives
• Environmental monitoring: temperature sensors, fan control, power supply status
• SES (SCSI Enclosure Services) support for drive LEDs, enclosure status
• Hot-swappable design (when redundant ESM present)
• LED indicators for status, link/activity, faults

Model / Part Number | IBM 49Y5951 (also 49Y5949)
Interface / Connector Type | 2 × external Mini-SAS (SFF-8088) host ports
Capacity / Speed / Frequency | 6 Gbps SAS 2.0 per port / Controls 12 or 24 drives
Form Factor | Plug-in ESM module (rear of EXP2512/EXP2524 enclosure)
Spindle Speed (RPM) | N/A (controller card)
Sector Format / Firmware Info | N/A – runs enclosure firmware
Power Requirements | Supplied by enclosure backplane – ~20–40W typical draw

Note: The EXP2512 and EXP2524 are legacy IBM DS3500-series expansion enclosures (EoL/EoS long ago). The 49Y5951 ESM is one of the most frequently replaced parts in these systems. If both ESMs fail, the enclosure becomes completely unusable. Refurbished units are still readily available from IBM/Lenovo parts resellers. Let me know if you need current sourcing links or related parts (e.g., power supplies, drive trays)!

IBM 49Y5951 EXP2512 ESM SAS CONTROLLER 2nd :: Alt () Other //

IBM 49Y5951 EXP2512 ESM SAS CONTROLLER 2nd :: Alt () Other //

$75.79 (Ex. GST)

$75.79 (Ex. GST)

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