Dell Optiplex 9010. 4gb ram (appears only one working slot). IV21, IV22, IV23, IV24, IV26, IV28, IV40, IV41, IV42, IV43, IV44, IV45, IV46, IV47, IV48, IV49, IV51, IV52, IV53, IV54, IV56, KW11, KW12, KW13, KW5, PA33, PA34, PA36, PA40, PH30, PH31, PH32, PH34, PH35, PH36, PH37, PH38, PH39, PH40, PH41.
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