ZyXEL N750 NBG5615 router review

300 + 450 Mbps
IEEE 802.11a/b/g/n
Ralink RT6856 @ 700 MHz
128 MB / 16 MB

ZyXEL introduced the N750 NBG5615 router in 2013. It is powered by Ralink RT6856 @ 700 MHz chipset, 128 MB of RAM, and 16 MB of flash memory.

Want to know if the N750 NBG5615 is a game-changer? Keep following along!

Table of Contents

  • ZyXEL N750 NBG5615 specifications
    • Body, dimensions, weight
    • System, chipset, RAM, flash, power supply
    • Network, protocols, WAN and LAN ports
    • Wireless, antennas, speed, security
    • Connectivity
    • Administration, user interface, login information
    • Links
  • Verdict, Pros and Cons
  • Photos
  • Comparisons

Our personal experiences and opinions form the basis of this article. We aimed to share insights on a topic, and we hoped others would find it useful and inspirational. If you noticed any mistakes or missing details about the ZyXEL N750 NBG5615, please let us know.

ZyXEL N750 NBG5615 / NBG5615

The N750 NBG5615 is a versatile router that offers more than basic functionality. It provides a fast network for homes and offices. ZyXEL has received awards and recognition for its excellent networking products.

ZyXEL N750 NBG5615 specifications

NameN750 NBG5615
Rated 3/5 based on 1505 user votes.


Dimensions186 x 120 x 30 mm
Weight308 g

If you live in a small apartment, the size of the router is crucial to deciding whether it will fit. The weight of a router can matter in some situations. But it's usually not as crucial as other factors.


ChipsetRalink RT6856 @ 700 MHz
Flash16 MB
Power supply12 V / 2 A

The Ralink RT6856 @ 700 MHz CPU affects the router's performance, working with RAM and firmware. The amount of RAM in a router affects its performance and ability to handle tasks and traffic.


LAN ports4 x 10/100/1000 Mbps
WAN ports1 x 10/100/1000 Mbps
Mobile networkno
VPN supportno

This router has Gigabit Ethernet LAN ports. They provide data transfer speeds of up to 1000 Mbps. The N750 NBG5615 ensures that you can use fast internet from your ISP fully.

ZyXEL N750 NBG5615 (NBG5615) / 1


Antennas3 x 3 dBi
2.4 GHzyes
5 GHzyes
60 GHzno
StandardsIEEE 802.11a/b/g/n
Speed300 + 450 Mbps
Transmit power20 dBm
Guest networkyes

Many IoT devices, smart home devices, and older Wi-Fi devices mainly use the 2.4 GHz band. This router operates on both the 2.4 GHz and 5 GHz frequency bands. This is a Wi-Fi 4 router, with slower data transfer speeds. This can result in slower downloads, buffering, and reduced performance. The introduction of WPA2 (Wi-Fi Protected Access 2) improved upon WEP. It provides stronger security.


USB ports2 x USB 2.0
Print serveryes
File serveryes

The USB 2 port has a maximum theoretical data transfer rate of 480 megabits per second (Mbps). A USB print server lets you connect a printer to your network. Then, computers can print to it without a direct connection. The N750 NBG5615 router lets you schedule backups. You can back up to the connected USB storage device.


Default IP192.168.1.1
Default username[blank]
Default password1234

If you can't log in to your ZyXEL router's setup panel, try resetting it. A reset can help you troubleshoot. It is highly recommended to change the default password of your N750 NBG5615 router. Do this after the initial setup.

Official site

Pros and Cons

Every router, including this ZyXEL one, has its good sides and not-so-good sides. Let's take a closer look at both to get a full understanding of what this router can do. Just remember, this is just what I think, and you might see things differently.


  • lightweight
  • sufficient memory
  • high-speed LAN port
  • high-speed WAN port
  • works on 5 GHz band
  • USB 2 compatible
  • printserver functionality
  • fileserver operation


  • insufficient flash
  • missing Wi-Fi 6 support
  • lacks Wi-Fi 5 compatibility
  • incompatible with WPA3
  • missing WPS support

ZyXEL N750 NBG5615 photos

ZyXEL NBG5615 / NBG5615 photo
ZyXEL NBG5615 / NBG5615 photo
ZyXEL N750 NBG5615 / NBG5615

ZyXEL N750 NBG5615 comparisons

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Updated: May 25, 2024

Robert Miller
For over 15 years, I've immersed myself in the world of networking devices as a tech aficionado. I've dedicated myself to thoroughly testing and analyzing routers and other networking gear. I aim to provide thorough reviews. They will give you the knowledge needed to improve your network.