IBM ServeRAID

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64-bit PCI connector (long)
ServeRAID-4M
(part 37L6080, 2000)
US Announcement Letter: 100-099
Visual identifiers:
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Two external VHDCI connectors
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Two internal 68-pin industry-standard SCSI connectors
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Battery integrated into a daughter card lengthwise along card, near handle
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No heat sinks (4Mx has heat sinks)
ServeRAID-4Mx
(part 06P5736, 2001)
US Announcement Letter: 101-146
Visual identifiers:
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Similar to ServeRAID-4M (check for heat sinks)