Apple iMac - 1 TB storage - 16 GB memory - Intel Core i5

This iMac comes with Mac OS Catalina 10.15 pre-installed.

The RAM in this 27-inch iMac model is user-upgradable, typically through an access panel on the back. Storage upgrades are more complex and generally require professional service.

The GF GTX 660M graphics card is an entry-level discrete GPU for its era. It can handle older or less graphically demanding games but is not suited for modern, graphics-intensive titles.

A generic mouse and keyboard are included with the iMac.

Use a soft, lint-free microfiber cloth, lightly dampened with water, to gently wipe the screen. Avoid spraying liquids directly onto the screen or using harsh cleaning chemicals.

No, this iMac model does not include a built-in optical drive. An external USB optical drive would be required to read CDs or DVDs.

Yes, you can connect external monitors using the Thunderbolt ports. You may need specific adapters depending on the input type of your external display (e.g., Mini DisplayPort to HDMI or DVI).

Ensure the power cable is securely connected to both the iMac and a working power outlet. Try a different power outlet. Press the power button firmly.

Close unnecessary applications running in the background. Check your storage space by going to `Apple menu > About This Mac > Storage`. Restart your iMac. You can also run Disk Utility from macOS Recovery to check for disk errors.

Restart your Wi-Fi router and modem. On your iMac, go to `System Preferences > Network > Wi-Fi` and ensure Wi-Fi is turned on. Try forgetting the network and rejoining it. Ensure you are within range of your 802.11a/b/g/n Wi-Fi network.

If wired, try plugging them into a different USB port. If wireless Bluetooth, check their batteries and ensure they are paired correctly by going to `System Preferences > Bluetooth`.

Restart your iMac. Check `System Preferences > Displays` for any unusual settings. If the issue persists, contact support.