LTE5388-M804 - Router ZYXEL - Free user manual and instructions
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| Product Type | 4G LTE Router |
| Brand | ZyXEL |
| Model | LTE5388-M804 |
| Dimensions (W x D x H) | 200 x 150 x 30 mm |
| Weight | Approx. 0.5 kg |
| Power Supply | DC 12V / 1A |
| Mobile Network | 4G LTE (Cat4, up to 150 Mbps download) |
| Wi-Fi Standard | 802.11 b/g/n/ac, dual-band (2.4 GHz + 5 GHz) |
| Ethernet Ports | 4 x Gigabit LAN, 1 x Gigabit WAN |
| USB Port | 1 x USB 2.0 for storage or printer sharing |
| Antenna | 2 external detachable antennas (LTE) |
| Key Functions | 4G/3G failover, VoIP, VPN, firewall, QoS, parental controls |
| LED Indicators | Power, Internet, Wi-Fi, LAN, LTE signal strength |
| Maintenance & Cleaning | Keep in a well-ventilated area; clean with a dry cloth; avoid liquids. |
| Security Features | WPA/WPA2/WPA3, SPI firewall, MAC address filtering, VPN pass-through |
| Spare Parts & Repairability | No user-serviceable parts; contact ZyXEL support or authorized service center. |
| General Information | Designed for home and small office; supports failover to wired WAN. |
Frequently Asked Questions - LTE5388-M804 ZYXEL
How do I set up my ZyXEL LTE5388-M804 router?
Insert a nano-SIM card, connect the power adapter and antennas. Then connect a device via Ethernet or Wi-Fi (default SSID and password on label). Open a browser and go to 192.168.1.1 to complete the setup wizard.
What should I do if I forgot the router's admin password?
Press and hold the Reset button for 10 seconds until the Power LED blinks. This restores factory defaults. Then log in with default credentials (admin / 1234) and set a new password.
How can I improve my Wi-Fi signal range?
Place the router in a central, elevated position, away from metal objects and electronics. Use the 5 GHz band for shorter range but higher speed. You can also add a Wi-Fi extender.
Why is my internet connection unstable?
Check the LTE signal strength indicator on the router. Move antennas for better reception. Ensure the SIM card has an active data plan. Try updating the router firmware via the admin panel.
How do I update the router firmware?
Log in to the admin interface (192.168.1.1). Go to Maintenance > Firmware Update. Click 'Check for Updates' or manually upload a downloaded version. Do not power off during update.
Can I use the router without a SIM card?
Yes, you can use it as a standard router by connecting the WAN port to a modem or fiber terminal. The LTE backup will not function without a SIM card.
How do I enable parental controls?
Log in to the admin interface and go to Security > Parental Control. You can block specific devices or websites, and set time limits for internet access.
What is the default IP address and login credentials?
Default IP is 192.168.1.1. Username: admin, Password: 1234 (both case-sensitive). Change them after first login for security.
How do I configure a VPN on the router?
Go to VPN in the admin menu. You can set up a VPN server (PPTP/L2TP) or client to connect to a remote VPN service. Enter the required server details and authentication.
What do the LED indicators mean?
Power: solid green (on), blinking (starting/flashing). Internet: solid green (connected), blinking (activity). Wi-Fi: solid green (Wi-Fi on). LAN: solid green (cable connected). LTE: 1-3 bars indicate signal strength, off means no signal.
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USER MANUAL LTE5388-M804 ZYXEL
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Product information
Brand : ZYXEL
Model : LTE5388-M804
Category : Router