Solved: OptiPlex 5040 Mini Tower optional Parallel support? - Dell Community
OptiPlex 5040 - Mini Tower Owner's Manual
Dell OptiPlex 5040 Small Form Factor Intel Core i7 3.4GHz 6th Gen 8GB RAM 1TB HDD Windows 10 Pro Desktop Price in Kenya | Best Prices at Mobile Hub Kenya
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Calculator Dell Optiplex 5040, Desktop SFF, ID 1372076