ComputersDesktop
ASUS CN67-S2 Computer Manual
Setup, everyday use, maintenance and troubleshooting for the Chromebox desktop, with verified specifications.
- ProcessorIntel Core 7
- Memory64 GB
- Idle power5.6 W
- Est. yearly cost$4.17
About the ASUS CN67-S2
This guide covers the ASUS CN67-S2, a Chromebox desktop listed as ENERGY STAR certified.
The certified configuration includes an Intel Core 7 processor (10 cores, up to 5.4 GHz), 64 GB of memory, and SSD storage, running ChromeOS. Retail configurations of the same model can differ, so check the system information on your unit.
Hardware listed in the certification record includes a 90 W external power adapter.
Its typical energy consumption (TEC) is 24.5 kWh per year, 55% below the ENERGY STAR limit of 54.1 kWh for its configuration. Measured idle power is 5.6 W, and sleep draws 1.4 W. The TEC figure is lower than 84% of the 285 Desktop models in our database.
Specifications
| Brand | ASUS |
|---|---|
| Model number | CN67-S2 |
| Computer type | Desktop |
| Processor | Intel Core 7 |
| CPU cores | 10 |
| Base clock speed | 1.8 GHz |
| Maximum clock speed | 5.4 GHz |
| Neural processing unit (NPU) | No |
| Memory (as certified) | 64 GB |
| Storage type | SSD |
| Installed storage drives | 1 |
| Operating system | ChromeOS |
| Touch screen | No |
| Power adapter rating | 90 W |
| Energy Efficient Ethernet | Yes |
| Default low-power mode | Sleep |
| Sleep timer (as shipped) | 9 min |
| Display-off timer (as shipped) | 8 min |
| Short-idle power | 5.6 W |
| Long-idle power | 4.9 W |
| Sleep power | 1.4 W |
| Off power | 0.2 W |
| Typical energy consumption (TEC) | 24.5 kWh/yr |
| ENERGY STAR TEC limit | 54.1 kWh/yr |
| Below ENERGY STAR limit | 55% |
Safety information
- Use the 90 W power adapter supplied with the computer, or a replacement from the manufacturer with the same voltage and an equal or higher wattage rating. Inspect the cord regularly and replace it if the insulation is damaged.
- Shut down and unplug the computer before opening the case. Touch a bare metal part of the chassis (or wear an antistatic wrist strap) before handling memory, drives or expansion cards.
- Keep liquids away from the keyboard and vents. If liquid is spilled, shut down immediately, unplug the power and let the computer dry completely before restarting.
Setup
- Unpack and inspect
Remove all packaging, protective film and cardboard inserts. Keep the box and receipt until you are sure the computer works correctly.
- Choose a location
Place the system unit on a stable surface or the floor with at least 4 in. (10 cm) of clearance around the vents. Avoid enclosed desk cabinets and carpet, which restrict airflow and collect dust.
- Connect a monitor
Connect your monitor to a video output on the back panel using HDMI, DisplayPort or USB-C as available.
- Connect peripherals and network
Connect the keyboard, mouse and any USB devices. For the most reliable connection, plug an Ethernet cable into the network port. Then connect the power cord.
- Complete operating system setup
Connect to Wi-Fi and sign in with a Google account (or the account your school or business provides). ChromeOS downloads updates automatically; restart when prompted to apply them.
- Set up backups
Turn on cloud sync or connect an external drive and schedule automatic backups before you store important files on the computer.
Using your computer
Sleep and power settings
As shipped, the ASUS CN67-S2 turns off its display after 8 minutes of inactivity and goes to sleep after 9 minutes. Keeping these timers short is the easiest way to save energy. Its default low-power state is conventional sleep, which keeps your session in memory at very low power and resumes in a few seconds. Measured sleep power is 1.4 W, compared with 5.6 W when idle with the screen on.
Performance
With 64 GB of memory, the system has ample headroom for heavy multitasking, large photo or video projects and virtual machines. Solid-state storage needs no defragmenting; leave 10–20% of the drive free so it can maintain performance.
Networking
Wired Ethernet is supported. Energy Efficient Ethernet (IEEE 802.3az) lowers link power during quiet periods when the switch also supports it.
Care and maintenance
| When | What to do |
|---|---|
| Weekly | Restart the computer to apply pending updates and clear memory; confirm that backups completed. |
| Monthly | Install operating system and application updates. Wipe the keyboard, mouse and case with a soft, slightly damp microfiber cloth (power off first). |
| Every 3–6 months | With the computer shut down and unplugged, clear dust from the front and rear vents and, if comfortable, inside the case around fans and heat sinks. |
| Every 6–12 months | Review free storage space and remove unused apps and large files; firmware updates arrive with the operating system updates. |
Troubleshooting
Start with the simple checks below. For beep codes, diagnostic lights or error messages specific to this model, use the manufacturer's built-in diagnostics and support documentation.
| Problem | Possible cause | What to try |
|---|---|---|
| Will not turn on | Power cord or outlet; power strip switched off. | Check the outlet and power strip, reseat the power cord, then hold the power button for 15 seconds and try again. |
| Runs hot or the fan is loud | Dust-clogged vents; blocked airflow; heavy background task. | Clean the vents, keep 4 in. of clearance around the case, and check the ChromeOS Task Manager (Search + Esc) for apps using a lot of power. |
| Slow performance | Too many background apps; storage nearly full; pending updates. | Close or disable unneeded startup items, free up storage space, install updates and restart. |
| Will not wake from sleep | Software or firmware issue; accessory preventing wake. | Press the power button briefly; update chipset, graphics and firmware; disconnect USB devices to test. |
| Wi-Fi drops or is slow | Weak signal; outdated software; router issue. | Move closer to the router, update the network driver, and restart the router. |
| No picture on the monitor | Wrong monitor input; loose cable. | Select the correct input on the monitor and reseat the video cable. |
Energy use and running costs
The ASUS CN67-S2 has a typical energy consumption (TEC) of 24.5 kWh per year, about $4.17 a year at $0.17 per kWh. TEC combines the measured off, sleep and idle power with ENERGY STAR's standard assumptions about how many hours a year a desktop spends in each state. It does not include time under heavy load such as gaming, rendering or video export, which can draw several times the idle figure.
| Power state | Measured power |
|---|---|
| Short idle (on, screen on, nothing running) | 5.6 W |
| Long idle (display off) | 4.9 W |
| Sleep | 1.4 W |
| Off (plugged in) | 0.2 W |
Sleep settings matter: leaving the computer on and idle for the 16 hours a day you are not using it adds about 32.7 kWh ($5.56) a year, versus 8.18 kWh ($1.39) if it sleeps during those hours.
Frequently asked questions
What processor and memory does the ASUS CN67-S2 have?
The certified configuration has an Intel Core 7 processor with 10 cores (up to 5.4 GHz) and 64 GB of RAM. Other retail configurations may differ.
How much electricity does the ASUS CN67-S2 use?
Its ENERGY STAR typical energy consumption is 24.5 kWh per year — about $4.17 at $0.17/kWh. It draws 5.6 W at idle and 1.4 W in sleep.
What operating system does the ASUS CN67-S2 run?
It was certified with ChromeOS.
Does the ASUS CN67-S2 have an NPU for AI features?
The certification record does not list an installed NPU for this configuration. If on-device AI features matter to you, check the processor specifications for your exact unit.
What charger does the ASUS CN67-S2 use?
It ships with a 90 W external power adapter. Replacements should match the voltage and connector and be rated for at least 90 W.
Sources and disclaimer
Specifications on this page come from the ENERGY STAR certified computers dataset published by the U.S. Environmental Protection Agency (record certified June 9, 2026), retrieved October 7, 2026.
The setup, operating, maintenance and troubleshooting guidance is written by ManualHarbor's editors for this specific product type and configuration. It is an independent guide — not a reproduction of the manufacturer's manual — and ManualHarbor is not affiliated with ASUS. Always follow the safety instructions, installation requirements and warranty terms supplied with your unit, and contact ASUS or an authorized service provider for warranty repairs and replacement parts.
Running-cost figures use assumed U.S. average utility prices and are estimates for comparison only. See our editorial methodology for details.