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MikroTik RouterBORD 5009UG+S+ with Marvell Armada ARMv8 CPU, 876538 (Marvell Armada ARMv8 CPU (4-cores, 1.4GHz per core), 1GB of DDR4 RAM, 1GB RB5009UG+S+in, Ethernet WAN,)
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AI Verdict
This is a wired MikroTik RouterBOARD with a 4-core 1.4GHz Marvell Armada ARMv8 CPU and 1GB DDR4 RAM, built for network enthusiasts and small businesses needing advanced routing.
This RouterBOARD is a strong fit for users with specific networking knowledge who can leverage its 4-core 1.4GHz Marvell Armada ARMv8 CPU and 1GB DDR4 RAM for complex routing tasks. Its lack of built-in Wi-Fi and reported port issues make it a situational choice for those prioritizing raw wired performance and deep configuration over ease of use or out-of-the-box wireless functionality.
If you need integrated wireless, look for a router with an explicit 802.11ax (Wi-Fi 6) or 802.11be (Wi-Fi 7) specification and multiple frequency bands.
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Pros
- Equipped with a 4-core 1.4GHz Marvell Armada ARMv8 CPU for high-speed performance and efficient multitasking.
- Features 1GB of DDR4 RAM, supporting robust network management in high-traffic environments.
- Includes an Ethernet WAN port for flexible network connections.
- Supports advanced network features like VPN and DDNS via scripting.
- Offers a USB port for additional connectivity options.
- Boasts an average time between failures of 200,000 hours, indicating hardware durability.
Cons
- Some users report buggy 2.5 Gigabit and SFP+ ports, potentially limiting throughput to 1 Gigabit Ethernet.
- Not designed for basic users, requiring technical knowledge for setup and configuration.
- Lacks built-in Wi-Fi, requiring external access points for wireless connectivity.
- Some users have reported unresponsive tech support for unresolved issues.
Dimension Scores
The device offers 2.5 Gigabit and SFP+ ports for high wired throughput, but some users report these ports can be buggy, potentially limiting performance to 1 Gigabit Ethernet.
It boasts an average time between failures of 200,000 hours, indicating a high level of hardware reliability.
The RouterOS is not considered easy to use for basic users and requires significant technical knowledge for configuration.
The RouterBOARD supports advanced features like VPN and DDNS via scripting, offering extensive control over network security configurations.
Best For
- Tech enthusiasts who want to customize and optimize home networks with advanced routing features.
- Small businesses needing reliable networking with robust performance for multiple connected devices.
- Gaming setups requiring low-latency connections and efficient bandwidth management.
Not Recommended For
- Basic users seeking simple plug-and-play routers without advanced features or technical setup.
- Users who require built-in wireless connectivity without adding external hardware.
- Mobile users needing portable networking solutions, as this device is for static installations.
Watch Out For
- Some users reported that the 2.5G and SFP+ ports are buggy, reducing the router's effective speed to 1GBE.
- MikroTik's RouterOS has a steep learning curve, making it challenging for those without prior networking experience.
- Tech support has been described as unresponsive by some users when encountering unresolved issues.
Full Specifications
| ASIN | B09GW641SL |
| Brand | MikroTik |
| Color | Black |
| Language | English, English, English, English, English |
| Batteries | 1 Lithium Ion batteries required. |
| Model Name | RB5009UG+S+IN |
| Item Weight | 1.74 pounds |
| Manufacturer | MikroTik |
| Special Feature | WPS |
| Item model number | RB5009UG+S+IN |
| Compatible Devices | Personal Computer |
| Product Dimensions | 19.69 x 19.69 x 11.02 inches |
| Included Components | K-55 screw kit, 24V 1.5A power adapter |
| Frequency Band Class | Single-Band |
| Connectivity Technology | Ethernet, USB |
| Recommended Uses For Product | Home |
| Is Discontinued By Manufacturer | No |
| Wireless Communication Standard | 802.11ac |
What Buyers Say
The most surprising finding is the recurring complaint about buggy 2.5 Gigabit and SFP+ ports, with some users stating these ports effectively downgrade the router to 1 Gigabit Ethernet speeds. Many users highlight the powerful 4-core 1.4GHz Marvell Armada ARMv8 CPU and 1GB DDR4 RAM as key strengths for handling complex network tasks. However, the steep learning curve of MikroTik's RouterOS is a consistent theme, making it unsuitable for those expecting a simple setup. There are also mentions of unresponsive tech support when issues arise.
“Man, I thought those 2.5G ports would be blazing, but half the time they act like regular gigabit, and trying to figure out RouterOS is a whole weekend project. Still, it's fast when it works and I can do anything with it, if I can just get the config right.”
Common Praise
- The 4-core 1.4GHz Marvell Armada ARMv8 CPU handles demanding applications and multitasking without slowdowns.
- 1GB of DDR4 RAM ensures stable performance even with many connected devices.
- The extensive configuration options in RouterOS allow for highly customized network setups.
- It's a compact device that fits well in small network cabinets or home lab setups.
- The inclusion of SFP+ and 2.5 Gigabit Ethernet ports provides future-proofing for faster wired connections.
Common Complaints
- The 2.5 Gigabit and SFP+ ports sometimes do not perform as expected, acting more like 1 Gigabit ports.
- Setting up and configuring RouterOS is complicated and requires significant technical expertise.
- Some users experienced difficulty getting timely and helpful responses from MikroTik's tech support.
- The device runs warm under heavy load, requiring consideration for ventilation.
- Lacks built-in Wi-Fi, necessitating additional hardware for wireless access.
Ownership Tips
- The device requires active cooling or good airflow in a rack, as it can get quite warm during sustained high utilization.
- Expect to spend considerable time learning RouterOS if you're new to MikroTik; it's powerful but not intuitive.
- Firmware updates are frequent and often address performance issues, so staying current is important.
- The small form factor is convenient for mounting, but the port layout can be tight with larger cables.
- You'll likely need to purchase a separate Wi-Fi access point, as this unit is strictly wired.
Frequently Asked Questions
Does the MikroTik RouterBOARD 5009UG+S+ have built-in Wi-Fi?
No, this model is a wired router and does not include built-in Wi-Fi capabilities. You will need external access points for wireless connectivity.
Is this router suitable for beginners?
No, it is not suitable for basic users. The MikroTik RouterOS requires technical knowledge for setup and advanced configuration, making it challenging for those new to networking.
What kind of CPU does it have?
It is powered by a Marvell Armada ARMv8 CPU with four cores, each operating at 1.4GHz.
How much RAM does it come with?
The device is equipped with 1GB of DDR4 RAM.
Can it handle multiple devices and high network traffic?
Yes, with its 4-core Marvell Armada ARMv8 CPU and 1GB of DDR4 RAM, it can efficiently handle multiple tasks simultaneously and is designed for robust network management in high-traffic environments.
What kind of ports does it have?
It features an Ethernet WAN port and other Ethernet ports, including 2.5 Gigabit and SFP+ ports, along with a USB port.
Buying Guide
When looking at a router like this, you need to understand that it's not a simple 'plug and play' box. You're buying a powerful network computer that runs specialized software (RouterOS). This means you get incredible control over your network traffic, security, and routing, but it demands your time and knowledge to configure. Think of it less like a home appliance and more like a server you need to set up yourself.
Marvell Armada ARMv8 CPU (4-cores, 1.4GHz)
This is the 'brain' of your router. A powerful multi-core CPU like this means the router can process network traffic, run VPNs, and manage many connections simultaneously without slowing down, similar to how a faster computer processor handles more demanding software.
1GB DDR4 RAM
RAM is the router's short-term memory. More RAM allows the router to handle more active connections, larger routing tables, and more complex firewall rules efficiently. Think of it like RAM in your computer; more means smoother multitasking.
Ethernet WAN, 2.5 Gigabit, SFP+ ports
These are your network connections. WAN connects to your internet service. 2.5 Gigabit ports offer speeds 2.5 times faster than standard Gigabit Ethernet, and SFP+ ports can support 10 Gigabit speeds, crucial for connecting to very fast internet or local network devices like servers.
Alternatives
If this doesn't fit, search for routers with integrated Wi-Fi 6 or Wi-Fi 7 for wireless convenience, or look for simpler 'consumer-grade' routers if you don't want to dive deep into network configuration.



