ASUS RT-AC86U AC2900 — Listing ASUS RT-AC86U · AC2900 · Dual-Band Gigabit · AiMesh Ready ASUS RT-AC86U
The Router Enthusiasts Still Recommend.

A seriously capable dual-band gigabit router, meticulously maintained, with AsusWRT-Merlin firmware already installed and factory reset — ready to go.

✦ Excellent Condition RT-AC86U / AC2900 1.8GHz Dual-Core CPU MU-MIMO AiMesh Ready Merlin Firmware 3 Antennas + PSU ⭐ Very Well Cared For — Better Shape Than Most

This router has been meticulously maintained throughout its life. The chassis, all ports, antenna connectors, and LEDs are all in excellent shape consistent with careful home use. Factory reset and ready for a new owner to set up from scratch. Photos cover every angle — what you see is exactly what you're getting.

🔵 New to this router? Here's why it's still highly regarded.

The RT-AC86U was ASUS's answer to the demand for a genuinely powerful home router that didn't require a degree to configure. Under the hood it runs a 1.8GHz dual-core processor — one of the fastest in its generation — with 512MB of RAM and a dedicated Broadcom Wi-Fi chipset. That CPU headroom matters: it keeps connections stable under heavy load, and makes VPN performance far better than cheaper routers.

It covers medium-to-large homes well, handles dozens of simultaneous devices, and gives you features typically found in business-grade hardware — adaptive traffic prioritisation, Trend Micro security, AiMesh whole-home mesh support, and a USB 3.1 port for network-attached storage. All of that for a fraction of the new price.

This unit also comes with AsusWRT-Merlin firmware already installed and factory reset — one of the most sought-after configurations for this router. More on that below.

Bonus AsusWRT-Merlin Firmware — Already Installed

Merlin is a community-built enhancement of the official ASUS firmware — same familiar interface, but with meaningful improvements in security, performance, and flexibility that the stock firmware doesn't offer. Many buyers specifically seek out routers with Merlin pre-installed. This one has it, factory reset and ready to configure.

Enhanced VPN WireGuard and OpenVPN support with better CPU utilization — much faster tunnels than stock firmware Ongoing Security Regular security patches from the Merlin community — continued updates where stock firmware leaves off Add-On Support Install Skynet (firewall), Diversion (network-wide ad blocking), and other community tools via Entware Better Stability Improved memory management and bug fixes on top of the standard ASUS firmware base Custom Scripts Schedule reboots, automate firewall updates, log traffic — full bash scripting support Clean Slate Factory reset — all previous settings wiped. Plug in, open the browser, and configure it as your own 🎯 Who This Is For 🎮 Gamers Adaptive QoS prioritises gaming traffic; WTFast accelerator built in 🔒 VPN Users Run VPN on the router itself — every device protected without separate apps 🏠 AiMesh Systems Pair with any AiMesh-compatible ASUS router for seamless whole-home coverage 💻 Work From Home Stable multi-device performance; USB 3.1 port for NAS or printer sharing 🛡️ Network Security AiProtection by Trend Micro; Merlin adds Skynet firewall and ad blocking 📡 Large Homes Three high-gain antennas and 4×4 MU-MIMO for wide, stable coverage 🗄️ Network Storage USB 3.1 + USB 2.0 ports — plug in a drive and share files across the network 🔧 Enthusiasts Deep control via Merlin: scripts, VLAN, DNS, policy routing and more 💰 Smart Buyers Performance that rivals new routers 2–3× the price, for a fraction of the cost Hardware Highlights

• 1.8GHz dual-core Broadcom CPU — enough headroom for VPN, QoS, and multiple streams simultaneously without slowdown
• 512MB RAM — well above average for this router class; handles large device counts comfortably
• 4×4 MU-MIMO on 5GHz — serves multiple devices at full speed simultaneously
• AiMesh support — works with any compatible ASUS router to form a whole-home mesh network
• USB 3.1 + USB 2.0 — share storage or printers directly from the router
• Trend Micro AiProtection — real-time threat scanning and parental controls

Ports & Connectivity

• 1× Gigabit WAN (internet in)
• 4× Gigabit LAN (wired devices)
• 1× USB 3.1 Gen 1
• 1× USB 2.0
• 2.4GHz Wi-Fi — 3×3, up to 750Mbps (1024-QAM)
• 5GHz Wi-Fi — 4×4, up to 2,167Mbps (802.11ac)
• 3 detachable omnidirectional antennas
• WPS button, LED on/off switch

⚙ Technical Specifications Model ASUS RT-AC86U (also labelled AC2900) Processor Broadcom BCM4906 — 1.8GHz dual-core ARM v8 RAM 512MB DDR3 Flash Storage 256MB (firmware + settings) Wi-Fi Standard 802.11ac (Wi-Fi 5) — dual band 2.4GHz Speed Up to 750Mbps (3×3, 1024-QAM) 5GHz Speed Up to 2,167Mbps (4×4 MU-MIMO) Combined Rating AC2900 LAN Ports 4× Gigabit Ethernet WAN Port 1× Gigabit Ethernet USB 1× USB 3.1 Gen 1 + 1× USB 2.0 Antennas 3× detachable omnidirectional (external) Security WPA3, WPA2, AiProtection (Trend Micro) Firmware AsusWRT-Merlin — installed, factory reset Mesh ASUS AiMesh compatible Dimensions 8.7 × 3.4 × 6.2 in — vertical stand built-in 📦 What's Included ✔ ASUS RT-AC86U Router Fully functional — all ports, LEDs, Wi-Fi bands, and USB tested and working. AsusWRT-Merlin installed and factory reset. ✔ All 3 Detachable Antennas Complete set — all three omnidirectional antennas present and in excellent condition ✔ Original Power Supply OEM ASUS power adapter A Router Enthusiasts Still Trust — Ready to Go

Excellent condition, complete with antennas and power supply, with Merlin firmware already installed and factory reset. Plug it in, open your browser, and you're configuring.

Questions about setup, VPN configuration, or compatibility with your existing ASUS gear? Message me — I know this hardware well and will give you a straight answer.

🔒 Private seller, not a dealer. Meticulously maintained and honestly described. Carefully packed for shipping. Local pickup also welcome.