MikroTik CRS504-4XQ-OUT Switch – High-Performance Enterprise & Industrial Network Switch

The MikroTik CRS504-4XQ-OUT is an outdoor 100 Gigabit switch with 4 QSFP28 ports, designed for high-speed fiber connectivity in exterior installations where standard indoor enclosures are not an option. It is widely used in university and industrial campuses, distributed ISP infrastructures, outdoor event installations, and network towers where 100G or 4x25G connections between nodes must be maintained regardless of weather conditions. The IP66 enclosure, QSFP28 ports with 25G breakout support, and multiple powering options make it the most versatile outdoor 100G switching solution available at this price point.

The switch is built on the Marvell Prestera 98DX4310 chip with a QCA9531 processor at 650 MHz and 128 MB RAM, managed via RouterOS v7 (License Level 5). The four QSFP28 ports support 100G natively or — via breakout cables — up to 16 simultaneous 25G interfaces from a single outdoor switch. Configuration flexibility allows mixing speeds across independent ports: 100G, 40G, 4x25G, 10G, or 1G on the same device. The Marvell Prestera switch chip handles VLANs, ACL, MLAG, Jumbo frames, and L3 hardware offloading at a consumption of just 25W without attachments — remarkable energy efficiency for this performance class.

The CRS504-4XQ-OUT integrates into high-speed network infrastructures as an outdoor aggregation or uplink node, with three independent powering options — DC jack, 2-pin terminal, and 802.3bt PoE-in — for maximum redundancy in installations where access to power sources may be limited. The 10/100 management Ethernet port and RJ45 console provide direct access for configuration and troubleshooting without requiring a connection to the production network. PCB temperature and voltage monitoring deliver continuous operational visibility.

It is recommended for ISPs and network operators building outdoor 100G aggregation nodes, industrial and university campuses where backbone links must cross outdoor spaces, event organizers requiring temporary high-speed connectivity in variable weather conditions, and any infrastructure where the cost and footprint of a compact outdoor 100G switch are decisive factors. IP66 protection and an operating temperature range of -40°C to +70°C confirm reliable operation in any outdoor climatic conditions.