ASUS A21 Plus User Manual
Accessory Kit Contents
The accessory kit includes the following items:
| Identifier | Description | Quantity |
|---|---|---|
| A | PSU Screws | x4 |
| B | Motherboard / 2.5" Drive Screws | x21 |
| C | 3.5" Drive Screws | x12 |
| D | Standoff Tool | x1 |
| E | Cable Ties | x8 |
Installation Guide
Follow these steps to install components into your ASUS A21 Plus case.
1. Remove the Side Panels
To begin installation, remove both side panels from the chassis. This typically involves unscrewing the rear panel fasteners and sliding the panels off.
2. Install the Power Supply Unit (PSU)
Mount the power supply unit into its designated bay at the bottom rear of the case. Secure it using the provided PSU screws (Item A).
3. Install the Cooler & RAM on the Motherboard
Before installing the motherboard into the case, attach the CPU cooler and RAM modules to the motherboard. Ensure they are properly seated and secured.
4. Install the I/O Shield
Insert the motherboard's I/O shield into the rectangular cutout at the rear of the case. Ensure it snaps firmly into place.
5. Install the Motherboard Unit
Place the motherboard into the case, aligning its mounting holes with the standoffs. Secure the motherboard with the appropriate screws (Item B).
6. Attach the Front I/O Connectors
Connect the front panel cables (e.g., power button, reset button, USB ports, audio jacks, LED indicators) to the corresponding headers on the motherboard. Refer to your motherboard manual for specific header locations.
7. Install the PCI-E Card
Remove the necessary expansion slot covers from the rear of the case. Insert your PCI-E card (e.g., graphics card, network card) into the appropriate PCI-E slot on the motherboard and secure it to the case.
8. Install the 2.5" Drives
Mount 2.5-inch drives (SSDs or HDDs) into the designated 2.5-inch drive bays or mounting brackets using screws (Item B).
9. Install the 3.5" / 2.5" Drives
Install 3.5-inch HDDs or 2.5-inch SSDs into the drive cages or mounting locations. Use the appropriate screws (Item B for 2.5" drives, Item C for 3.5" drives).
10. Installation and Maintenance of the Dust Filters
The ASUS A21 Plus features dust filters to keep your system clean. Install the filters into their designated slots (typically front and top). Regularly remove and clean the dust filters to maintain optimal airflow.
Additional Information
CPU Cooler Height Limitation
The maximum CPU cooler height supported by this case is 165 mm.
Graphics Card Limitation
The maximum graphics card length supported by this case is 380 mm.
Fan Setup Compatibility
The case supports various fan configurations:
- Up to seven 120 mm fans
- Up to four 140 mm fans
Water-cooling Radiator Options
The case supports the following water-cooling radiator sizes:
- 120 mm
- 140 mm
- 240 mm
- 280 mm
- 360 mm
Safety Information
Safety Precautions: Accessories included with this product are designed and verified for use with this product. Never use accessories intended for other products to prevent risks of electric shock or fire.
Product Environmental Regulation Compliance: ASUS adheres to green design principles and global environmental regulations throughout its product lifecycle. Information on compliance, including RoHS (Restriction of Hazardous Substances) directives for EU, India, Vietnam, and Turkey, is available. For detailed information, please refer to the ASUS compliance website.
REACH Compliance: ASUS complies with the REACH (Registration, Evaluation, Authorisation, and Restriction of Chemicals) regulatory framework. Chemical substances in ASUS products are published on the ASUS REACH website.
Recycling Information: ASUS provides recycling and takeback programs to promote environmental responsibility. Details can be found on the ASUS support website.
Australian Consumer Law: Warranties are updated in accordance with the Australian Consumer Law. For the latest warranty details and support, visit the ASUS support website or contact ASUS Customer Service.
Hazardous Substance Information: The product contains a table indicating the presence of hazardous substances in components, adhering to standards like SJ/T 11364 and GB/T 26572. The table specifies the content levels for substances like Lead (Pb), Mercury (Hg), Cadmium (Cd), Hexavalent Chromium (Cr+6), PBBs, and PBDEs.
France Sorting and Recycling Information: Information regarding the proper sorting and recycling of the appliance and its accessories is provided, encouraging repair or donation where possible.
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