Lenovo V130-20IGM AIO, Intel Pentium D/C, 1TB hard drive, 4 GB Ram, Mouse, Keyboard, 19.5 inches monitor, Free Dos

Lenovo V130-20IGM 19.5” WXGA+ 1440×900 Non-Touch All In One Desktop PC, 4GB DDR4-2400 Memory (1x4GB), 1000GB 7200rpm SATA Hard Drive, DVD writer optical Drive, USB Keyboard & USB Mouse, Wireless Intel 3165 8011.ac, Bluetooth, Windows 10 Home 64bit, USB 3.1 Gen.1 Bottom, USB 2.0 Bottom, 3-in-1 card reader (SD, SDHC, SDXC) Bottom, Combo headphone and mic audio jack Bottom, Ports – Rear USB 3.1 Gen.1, 3 x USB 2.0, HDMI out, LAN

All in one computers.
All-in-one (AIO) computers are a complete PC (Personal computer) system that consists of the monitor and system as a single unit. The AIO saves space while offering a fully functioning desktop PC system consisting of all the ports on the actual unit, usually at the back of the monitor.
AIO has limited upgrade capabilities, usually just the hard drive and memory. The other components are not upgrade-able (graphics card for example). The upgrade may need to be done by a qualified technician as the AIO requires disassembly.