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ZyXEL NBG6503 router review

300 + 433 Mbps
IEEE 802.11a/b/g/n/ac
MediaTek MT7620 @ 580 MHz
64 MB / 8 MB

ZyXEL introduced the NBG6503 router in 2013. It is powered by MediaTek MT7620 @ 580 MHz chipset, 64 MB of RAM, and 8 MB of flash memory.

Curious to know if the NBG6503 is top-notch? Keep reading to find out!

Table of Contents

  • ZyXEL NBG6503 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
  • 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. 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 NBG6503, please let us know. Furthermore, we strive to deliver a thorough and precise overview.

ZyXEL NBG6503 / NBG6503

The NBG6503 is a versatile router that offers more than basic functionality. It has advanced features and capabilities. It provides a reliable, fast network for homes and offices. ZyXEL is widely recognized as a reputable and established manufacturer of networking equipment.

ZyXEL NBG6503 specifications

BrandZyXEL
NameNBG6503
TypeNBG6503
Rating
Rated 3/5 based on 1483 user votes.
Launch2013

Body

Dimensions159 x 111 x 23 mm
Weight230 g

If you have limited space, like in a small apartment or office, the dimensions can determine if it can fit there. If you plan to mount your router on a wall or ceiling, the weight can affect the mounting process. It also affects the type of mounting hardware needed.

System

ChipsetMediaTek MT7620 @ 580 MHz
RAM64 MB
Flash8 MB
OSZyXEL
Power supply12 V / 1 A

The MediaTek MT7620 @ 580 MHz CPU is key. It, along with factors like RAM and firmware, decides how well the router works. The 64 MB of RAM enables the router to handle multiple tasks and processes concurrently. Flash memory retains its data even when the router is off. This allows the router to keep its firmware and settings across reboots. Upgrading router firmware has become simple and user-friendly. The ZyXEL provides the right power supply. It is 12 V / 1 A, this matches the router's voltage needs.

ZyXEL NBG6503 (NBG6503) / 2

Network

ProtocolsIPv4
IPv6
LAN ports4 x 10/100 Mbps
WAN ports1 x 10/100 Mbps
Mobile networkno
VPN supportPPTP
L2TP

Like many modern routers, the ZyXEL NBG6503 supports many features and tech. They improve your network's connectivity and security. Most networking equipment, like routers and switches, supports IPv4. The NBG6503 router is also compatible with IPv6. IPv6 has a much bigger address space. It also offers many enhancements and improvements over IPv4. Wired connections may bottleneck due to the limits of Fast Ethernet ports. PPTP creates a VPN tunnel between two endpoints. It allows secure communication over an insecure network, such as the internet.

Wireless

Antennas1 x 2 dBi
RP-SMA
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

The 1 x 2 dBi, RP-SMA antennas allow sending and getting many data streams at once. This boosts overall throughput and improves Wi-Fi performance. This router is 2.4 GHz capable. The 2.4GHz band refers to the portion of the radio spectrum between 2.400 and 2.4835 gigahertz. To optimize your Wi-Fi experience, it's often recommended to use a combination of both 2.4 GHz and 5 GHz bands. The Wi-Fi router offers fast data speeds. They are good for streaming HD video, online gaming, and large file transfers.

The top speed, 300 + 433 Mbps, is the highest data rate the router can reach. It's the theoretical limit in perfect conditions. 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.

ZyXEL NBG6503 (NBG6503) / 1

Connectivity

USB portsno
Print serverno
File serverno

The NBG6503 router doesn't have file-server or print-server functionality.

Administration

Default IP192.168.1.1
Default usernameadmin
Default password1234

Changing the password often is a good security practice. It protects your network and devices from unauthorized access. Changing the default password improves your router's security. It reduces the risk of unauthorized individuals controlling your network.

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
  • works on 5 GHz band

Cons

  • insufficient flash
  • lack of Gigabit LAN
  • Non-gigabit WAN port
  • missing Wi-Fi 6 support
  • incompatible with WPA3
  • missing WPS support
  • no USB connectivity

ZyXEL NBG6503 photos

ZyXEL NBG6503 / NBG6503 photo
ZyXEL NBG6503 / NBG6503 photo
ZyXEL NBG6503 / NBG6503 photo
ZyXEL NBG6503 / NBG6503

ZyXEL NBG6503 comparisons

We've noticed that many of our visitors like to compare the ZyXEL NBG6503 router with these popular models.

ZyXEL NBG6615 (NBG6615) ZyXEL NBG6615 ZyXEL NBG-419N v2 (NBG-419NV2) ZyXEL NBG-419N v2 ZyXEL N750 NBG5615 (NBG5615) ZyXEL N750 NBG5615 ZyXEL Armor G1 (NBG6818) ZyXEL Armor G1

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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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