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ZyXEL AC750 NBG6515 router review

300 + 433 Mbps
IEEE 802.11a/b/g/n/ac
MediaTek MT7620A @ 580 MHz
64 MB / 8 MB

ZyXEL introduced the AC750 NBG6515 router in 2015. It is powered by MediaTek MT7620A @ 580 MHz chipset, 64 MB of RAM, and 8 MB of flash memory.

Curious if this ZyXEL router is a real gem? Stay tuned for the answer!

Table of Contents

  • ZyXEL AC750 NBG6515 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
  • Verdict, Pros and Cons
  • Photos

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. The specs below rely on official manufacturer data, but we also consider user reviews. If you noticed any mistakes or missing details about the ZyXEL AC750 NBG6515, please let us know. Furthermore, we strive to deliver a thorough and precise overview.

ZyXEL AC750 NBG6515 / NBG6515

The AC750 NBG6515 is a cheap router. It supports Wi-Fi 5 (802.11ac) for faster wireless speeds. This router has USB connectors. They add features and expand your network's capabilities. ZyXEL has a strong presence and offers a wide range of networking products.

ZyXEL AC750 NBG6515 specifications

BrandZyXEL
NameAC750 NBG6515
TypeNBG6515
Rating
Rated 4/5 based on 1478 user votes.
Launch2015

Body

Dimensions175 x 115 x 23 mm
Weight265 g

If you plan to move or travel a lot and need to take your router with you, the size is important. It needs to be small to be easy to carry. If you purchase a router online or have it shipped, the weight may affect the overall cost.

System

ChipsetMediaTek MT7620A @ 580 MHz
RAM64 MB
Flash8 MB
OSZyXEL
Power supply12 V / 1 A

The MediaTek MT7620A @ 580 MHz CPU provides processing power. It handles tasks and services within the AC750 NBG6515 router. Some router features and software need a certain amount of RAM. They need it to work well. More storage space comes from a larger flash memory. It can accommodate future firmware upgrades. The firmware upgrade process may vary depending on the router model. However, it often involves accessing the router's web-based administration interface. The ZyXEL packages the AC750 NBG6515 router with 12 V / 1 A PSU.

Network

ProtocolsIPv4
IPv6
LAN ports4 x 10/100/1000 Mbps
WAN ports1 x 10/100/1000 Mbps
Mobile networkno
VPN supportno

The AC750 NBG6515 router has built-in security features. They protect your network and devices. The IPv4 uses 32-bit addresses, represented as four sets of numbers separated by periods (e.g. 192.168.0.1). The router also supports IPv6. This allows you to use the latest Internet Protocol. If you have a 1 Gbps or faster internet plan, you need gigabit Ethernet ports. They are essential to use all the available bandwidth. This router ensures that you can use fast internet from your ISP fully.

ZyXEL AC750 NBG6515 (NBG6515) / 1

Wireless

Antennas2 x 5 dBi
fixed
2.4 GHzyes
5 GHzyes
60 GHzno
StandardsIEEE 802.11a/b/g/n/ac
ClassAC750
Speed300 + 433 Mbps
Transmit power20 dBm
SecurityWEP
WPA
WPA2
Guest networkyes

A well-positioned antenna can reduce interference and signal weakening. This leads to a more reliable connection. The router supports the 2.4 GHz Wi-Fi. Using the 5 GHz band can move some devices from the crowded 2.4 GHz band. This cuts congestion and boosts the network. The AC Wi-Fi router is backward compatible with older Wi-Fi devices that support 802.11a/b/g/n standards. Real-world AC750 NBG6515 router speeds are lower than its theoretical maximum speed.

WEP was the first Wi-Fi security protocol. But it is now seen as weak and easy to hack. The introduction of WPA2 (Wi-Fi Protected Access 2) improved upon WEP. It provides stronger security.

Connectivity

USB ports1 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). By connecting a USB printer to the AC750 NBG6515 router, you can make it accessible to all devices on your network. This router has a USB file server. It lets you connect external storage devices to your network. For example, you can connect USB flash drives or hard drives.

Administration

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 AC750 NBG6515 router. Do this after the initial setup.

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. We'll talk about what it does well and also where it could use some improvements. Just remember, this is just what I think, and you might see things differently.

Pros

  • lightweight
  • sufficient memory
  • IPv6 capable
  • high-speed LAN port
  • high-speed WAN port
  • works on 5 GHz band
  • USB 2 compatible
  • printserver functionality
  • fileserver operation

Cons

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

ZyXEL AC750 NBG6515 photos

ZyXEL AC750 NBG6515 / NBG6515 photo
ZyXEL AC750 NBG6515 / NBG6515 photo
ZyXEL AC750 NBG6515 / NBG6515

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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.
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