40K7464 - IBM Disk BackPlane SAS 4-slot

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As per mentioned the 8-th slot is connected to so called X-Bus (for some unknown reasons IBM calls it External Data bus, and the J8 is

The typo will be irrelevant to the answer Its an IBM X3650 · I've always found the right answer to these is: RTFM  FronterUS offers 5618 6-Slot SAS SFF DASDMedia Backplane wHH Bay Shop with confidence, all of our hardware is fully tested, guaranteed, professionally

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