An all-in-one (AIO) PC is a computer in which the display, processor, motherboard, memory and storage are integrated into a single enclosure. Instead of a separate desktop tower connected to a monitor by a video cable, the "CPU" — the actual computing hardware — is mounted directly behind or inside the screen panel. The result is one power cable, one unit on the desk, and no cable clutter between a system box and a display. This is what "inbuilt monitor with CPU" refers to: a display that already contains the complete computer.
How the Hardware Is Arranged
Inside an AIO, the panel and the compute board are two separate subsystems sharing one chassis. The display is typically an LED-backlit LCD panel at 1920×1080 (Full HD) in sizes such as 21.5-inch or 23.8-inch, driven over an internal LVDS or eDP link rather than an external HDMI cable. Behind it sit the processor, a single-board or compact motherboard, SO-DIMM memory slots, an M.2 or 2.5-inch storage bay, and a power delivery stage that converts mains AC to the low DC voltages the board needs. Because everything shares one thermal envelope, AIO designs usually rely on passive heatsinks or low-noise blowers, and fanless variants are common for dusty or quiet environments.
Key Specifications to Check
| Specification | Typical AIO options | Why it matters |
|---|---|---|
| Display size | 21.5-inch, 23.8-inch | Desk footprint vs. readability |
| Resolution | 1920×1080 Full HD | Standard for office, POS, kiosk |
| Processor | Intel Celeron, N-series, Core i3/i5 | Workload headroom |
| Memory | 4 GB to 32 GB DDR4 SO-DIMM | Multitasking, browser tabs, VMs |
| Storage | 128 GB to 1 TB SSD | Boot speed and local data |
| Touch | Resistive or capacitive (optional) | POS, kiosk, industrial HMI |
| Mounting | VESA 75/100 mm | Wall, arm or stand mounting |
| Networking | Gigabit Ethernet, optional Wi-Fi | Wired reliability in fixed installs |
Where Built-In Monitor PCs Fit Best
All-in-ones are chosen wherever a separate tower would be a liability — physically or operationally. Common deployments include point-of-sale counters and billing desks, reception and check-in stations, kiosk and self-service terminals, hospital and clinic workstations, library and education terminals, control-room operator panels, and factory HMI positions where the screen and the logic must live on the same panel. Fewer cables means fewer failure points, faster installation, and a smaller physical footprint in space-constrained areas. In 24×7 installations the absence of a separate monitor power supply and video cable also removes two of the most common intermittent-fault sources.
Choosing Between an AIO and a Mini PC Plus Monitor
If the monitor and the computer will always be used together in the same place, an AIO is usually the cleaner solution: one part number, one power connection, one item to service. If you may need to upgrade the display independently, mount the screen far from the compute unit, or drive multiple displays, a mini PC or industrial PC paired with a separate monitor offers more flexibility. AIOs also tend to have tighter limits on discrete graphics and internal expansion, so graphics-intensive or heavily expanded workloads are better
