1. Pengenalan
The Xiaomi Mi Router 4A Gigabit Edition (Model: R4AC) is a high-performance dual-band wireless router designed for home and small office environments. It features Gigabit Ethernet ports and supports both 2.4GHz and 5GHz Wi-Fi bands, providing fast and stable internet connectivity for multiple devices. This manual provides detailed instructions for the proper setup, operation, and maintenance of your router.
2. Kandungan Pakej
Sebelum meneruskan persediaan, sila sahkan bahawa semua item ada di dalam pakej anda:
- Xiaomi Mi Router 4A Gigabit Edition (Host)
- Penyesuai Kuasa
- Manual Pengguna (dokumen ini)

Image: Visual representation of the router, power cable, and instruction manual included in the package.
3. Produk Lebihview
The Xiaomi Mi Router 4A Gigabit Edition features a minimalist design with four external antennas for enhanced signal coverage. It includes multiple ports for wired connections and LED indicators for status monitoring.
3.1 Depan View

Imej: Depan view of the Xiaomi Mi Router 4A Gigabit Edition, showing its sleek white casing and four antennas.
3.2 Bersudut View dengan Antena

Imej: Bersudut view of the Xiaomi Mi Router 4A, highlighting its four external antennas in an upright position.
3.3 Dimensi

Image: Technical drawing displaying the dimensions of the Xiaomi Mi Router 4A, with measurements in millimeters.
3.4 Pelabuhan dan Penunjuk
The router features:
- Pelabuhan WAN: 1x 10/100/1000M adaptive port for connecting to your modem or internet service provider.
- Pelabuhan LAN: 2x 10/100/1000M adaptive ports for connecting wired devices like computers or gaming consoles.
- Input Kuasa: Untuk menyambungkan penyesuai kuasa.
- System Reset Button: Digunakan untuk memulihkan tetapan kilang.
- Penunjuk LED: Two indicators for system status and network activity.
4. Persediaan
4.1 Sambungan Perkakasan
- Sambungkan Penyesuai Kuasa: Plug the power adapter into the router's power input and then into a power outlet.
- Sambung ke Internet: Connect an Ethernet cable from your modem's LAN port to the router's WAN port.
- Sambungkan Peranti Berwayar (Pilihan): For wired connections, connect Ethernet cables from your devices to the router's LAN ports.
4.2 Tatarajah Awal
Anda boleh mengkonfigurasi penghala menggunakan web browser or the Mi Wi-Fi mobile application.
- Sambungkan ke Wi-Fi Penghala: On your computer or smartphone, connect to the default Wi-Fi network broadcast by the router. The network name (SSID) and password are usually found on a label on the bottom of the router.
- Access the Configuration Interface:
- Web pelayar: Buka a web pelayar dan masukkan alamat IP lalai (cth,
192.168.31.1ormiwifi.com) into the address bar. Follow the on-screen instructions to set up your internet connection and Wi-Fi network. - Mi Wi-Fi App: Download and install the Mi Wi-Fi app on your smartphone. Open the app and follow the prompts to detect and configure your new router.
- Web pelayar: Buka a web pelayar dan masukkan alamat IP lalai (cth,
- Set Up Wi-Fi Name and Password: During the initial setup, you will be prompted to create a new Wi-Fi network name (SSID) and a strong password for both the 2.4GHz and 5GHz bands. The router supports a unified Wi-Fi name for both frequencies, allowing devices to automatically switch to the optimal band.

Image: Diagram illustrating the unified Wi-Fi name feature, where both 2.4GHz and 5GHz bands share a single SSID for seamless connectivity.
5. Arahan Operasi
5.1 Menyambung Peranti
- Sambungan Wi-Fi: On your wireless devices (smartphones, tablets, laptops), search for your Wi-Fi network name (SSID) and enter the password you set during configuration.
- Sambungan Ethernet: For devices requiring a wired connection, plug an Ethernet cable from the device into one of the router's LAN ports.
5.2 Network Management Features
The router offers several features to manage and optimize your home network:
- Pengurusan Peralatan: Control internet access times and accessible websites for specific devices.
- Intelligent Speed Limit: Allocate bandwidth on demand to ensure a smooth online experience for critical applications.
- Wi-Fi Optimization: Perform a one-click detection to improve network performance and resolve common Wi-Fi issues.
- Keselamatan Rangkaian: Active interception features help eliminate the risk of unauthorized access or network attacks.

Image: Icons representing various router features, including network management, speed measurement, bandwidth control, Wi-Fi optimization, and network security.
5.3 Kapasiti Peranti
The Xiaomi Mi Router 4A Gigabit Edition is equipped with 128MB of DDR3 memory, supporting stable data transmission for up to 128 connected devices simultaneously. This makes it suitable for smart homes with numerous connected gadgets.

Image: Illustration showing the router's 128MB memory capacity, capable of supporting up to 128 connected devices, surrounded by various smart home devices.
6. Penyelenggaraan
6.1 Kemas Kini Perisian Tegar
Semak dan pasang kemas kini perisian tegar secara berkala untuk memastikan prestasi, keselamatan dan akses kepada ciri baharu yang optimum. Kemas kini perisian tegar biasanya boleh dilakukan melalui penghala web interface or the Mi Wi-Fi app.
6.2 Menetapkan Semula Penghala
If you encounter persistent issues or wish to clear all configurations, you can perform a factory reset:
- With the router powered on, locate the System Reset Button (usually a small pinhole button).
- Use a paperclip or a similar pointed object to press and hold the reset button for approximately 5-10 seconds until the LED indicators change behavior.
- Lepaskan butang tersebut. Penghala akan dimulakan semula dengan tetapan lalai kilang. Anda perlu mengkonfigurasinya semula.
6.3 Pertimbangan Alam Sekitar
To ensure the longevity and stable operation of your router, adhere to the following environmental guidelines:
- Suhu Operasi: 0°C hingga 40°C (32°F hingga 104°F)
- Kelembapan Operasi: 10% hingga 90% RH (tidak pemeluwapan)
- Suhu penyimpanan: -40°C hingga 70°C (-40°F hingga 158°F)
- Kelembapan Penyimpanan: 5% hingga 90% RH (tidak pemeluwapan)
Avoid placing the router in direct sunlight, near heat sources, or in areas with high humidity.

Image: Details on recommended operating and storage temperature and humidity ranges for the router.
7. Penyelesaian masalah
This section addresses common issues you might encounter with your Xiaomi Mi Router 4A Gigabit Edition.
- Tiada Akses Internet:
- Periksa sama ada kabel port WAN disambungkan dengan selamat ke modem anda.
- Pastikan modem anda berfungsi dengan betul dan mempunyai sambungan internet yang aktif.
- Restart both your modem and the router.
- Ensure the router's internet settings (e.g., PPPoE, DHCP, Static IP) are correctly configured according to your ISP.
- Wi-Fi Signal Weak or Unstable:
- Pindahkan penghala ke lokasi pusat, jauh daripada halangan dan sumber gangguan (cth., ketuhar gelombang mikro, telefon tanpa wayar).
- Laraskan antena penghala untuk arah isyarat yang optimum.
- Use the Wi-Fi Optimization feature in the router's interface or app.
- Ensure your devices are connecting to the appropriate 2.4GHz or 5GHz band.
- Tidak Dapat Mengakses Halaman Konfigurasi Penghala:
- Pastikan peranti anda disambungkan ke rangkaian penghala (sama ada melalui Wi-Fi atau Ethernet).
- Sahkan bahawa anda memasukkan alamat IP yang betul (cth.,
192.168.31.1) atau domain (miwifi.com). - Kosongkan cache penyemak imbas anda atau cuba penyemak imbas lain.
- Lumpuhkan sebarang tetapan VPN atau proksi pada peranti anda buat sementara waktu.
- Kelajuan Internet Perlahan:
- Semak kelajuan pembekal perkhidmatan internet anda.
- Ensure no other devices are consuming excessive bandwidth. Use the Intelligent Speed Limit feature if necessary.
- Perform a Wi-Fi Optimization scan.
- If using Wi-Fi, try connecting via Ethernet to determine if the issue is wireless-related.
8. Spesifikasi
Detailed technical specifications for the Xiaomi Mi Router 4A Gigabit Edition:

Image: Table detailing the router's internal specifications, including processor, memory, Wi-Fi standards, and port configuration.
| Ciri | Penerangan |
|---|---|
| Nombor Model | R4AC |
| Pemproses | MT7621A MPIS Dual Core 880MHz |
| ROM | 16MB |
| Product Memory (RAM) | 128MB DDR3 |
| Wi-Fi 2.4G | 2x2 (supports IEEE 802.11n protocol, up to 300Mbps) |
| Wi-Fi 5G | 2x2 (supports IEEE 802.11ac protocol, up to 867Mbps) |
| Product Antenna | 2x 2.4G (max gain 5dBi), 2x 5G (max gain 6dBi) |
| Antara Muka Mesin | 1x 10/100/1000M adaptive WAN port (Auto MDI/MDIX), 2x 10/100/1000M adaptive LAN ports (Auto MDI/MDIX) |
| Penunjuk LED | 2 |
| Butang Tetapan Semula Sistem | 1 |
| Antara Muka Input Kuasa | 1 |
| Standard Protokol | IEEE 802.11a/b/g/n/ac, IEEE 802.3/3u |
| Kekerapan Dwi | 2.4GHz dan 5GHz |
| Wireless Channels (2.4GHz) | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 |
| Wireless Channels (5GHz) | 36, 40, 44, 48, 149, 153, 157, 161, 165 |
| Sistem Operasi | RouterOS (Custom Xiaomi firmware) |
| warna | putih |
| Dimensi (L x W x H) | 201mm x 122mm x 174mm (with antennas up) |
| Peranti Serasi | Personal computer, laptop, tablet, smartphone, game console |
| Penggunaan yang Disyorkan | Rumah |

Image: Diagram illustrating the router's dual-core CPU with an 880MHz main frequency, emphasizing its processing capabilities.

Image: Information on the specific wireless channels available for 2.4GHz and 5GHz bands, along with supported modulation types.
9. Waranti dan Sokongan
Untuk maklumat jaminan, sila rujuk kad jaminan yang disertakan dengan produk anda atau lawati laman web rasmi Xiaomi. website for your region. Support resources, including FAQs and contact information, can also be found on the official Xiaomi support pages. Please retain your proof of purchase for warranty claims.