Conclusion: The Asus M51AC is a prototypical tower desktop computer, with all of the pluses and minuses that entails. It's not svelte and stylish, like an all-in-one desktop, but you get better bang for the buck and easier upgrades as your needs and budget allow.
Pros: Good hardware lineup, Easy to upgrade, Good performance
Cons: Just one open bay for additional hard drives, Configurations vary widely, Not great for gaming
Excerpt: The Asus M51AC-US015S desktop offers multimedia performance and even some gaming prowess a price the competition can't quite match, but the performance lags behind similarly equipped competition.
Conclusion: Asus covered all of its bases with the M51 desktop. A wonderful motherboard with plenty of upgradability, a wide range of models, and good exterior styling (complete with plenty of ports) makes for a very well-rounded entry that may just be what Asus needs to put itself back on the map in this...
Pros: Low-key design with lots of connectivity, Quality motherboard with room for upgrades, Well-rounded performance, Decent bundled peripherals, Good value
Cons: Case has just one empty drive bay, No solid-state drive option