Loosening a single thumbscrew on the rear panel lets the top cover slide off, exposing a beautifully clean, modular interior layout. Why Choose the OptiPlex 3090 Micro?. Ports & Connectivity (Rear): 4x USB 3.2 Gen 1 Type-A, 2x DisplayPort 1.4, 1x RJ-45 Gigabit Ethernet.
