Dell PowerEdge R660xs — Full Technical Specifications

One line in this table is a genuine either-or rather than a menu: onboard networking and the OCP seat are alternatives, not companions, and choosing wrong at order time means a slot spent fixing it afterwards. Read that first. The slot count itself depends on how many processors are fitted, which is unusual enough to catch people out when a single-processor machine is bought with plans to expand. Bays split between large and small format with very different capacities, and the rear pair is where a boot-and-data split usually goes. The management row is identical to its bigger stablemates, which is much of this model's appeal.