MK-CRS504 4XQ IN

MikroTik 4x 100G QSFP28 Port Switch

Overview Summary:

The MikroTik CRS504-4XQ-IN is a powerful 4-port 100 Gigabit QSFP28 switch designed for advanced networking - ideal for South African data centers, offices or network-intensive environments. It supports dual AC/DC/PoE powering, runs RouterOS v7 with a Level 5 license, and is compact enough for rack or wall mounting. With low power draw (≈ 25 W idle, 41 W max) and broad fiber flexibility (100G, 50G, 40G, 25G, 10G or 1G), it's a cost-efficient upgrade for networks currently at 10G or 25G.

If you need future-proof infrastructure, upgrade to 100G fibre connectivity and dramatically boost network backbone capacity - buy now to scale your network for demanding workloads. Perfect for server backbones, storage clusters, or ISP-grade links - shop now to bring 100G to your infrastructure.

What tier does this fall into?

Enterprise / Data-centre ready

What is this best for?

Network backbone switch, Fibre-optic aggregation, High-speed server interconnect, Data center backbone, ISP or business core networking

Overview:

CRS504-4XQ-IN 4x 100G QSFP28 Port Switch
Step into high-speed networking with the MikroTik CRS504-4XQ-IN, designed to make 100 Gigabit connections accessible beyond traditional data centers. This compact and energy-efficient switch is ideal for upgrading 10 or 25 Gigabit networks and expanding high-performance connectivity in offices, labs, and small-scale enterprise setups. Dual power inputs and versatile mounting options make it easy to integrate into any network environment.

Description:

The CRS504-4XQ-IN switch offers four 100 Gigabit QSFP28 ports and one RJ45 console port for seamless management. Each QSFP28 port can support multiple 25 Gigabit connections using breakout cables, allowing flexible network configurations. Powered by RouterOS with an L5 license, it includes 64 MB of RAM and 16 MB of storage. Dual AC inputs ensure uninterrupted operation, while a dedicated Ethernet port simplifies system administration. With low energy consumption and compact design, this switch is ideal for high-speed networking projects in research, enterprise, or office settings.

Features:

High-Speed Connectivity for Modern Networks
Expand your network without limits. The CRS504-4XQ-IN allows connections at 100 Gigabits, 40 Gigabits, or multiple 25 Gigabit links per port. This flexibility makes it perfect for mixed environments where high-speed links need to coexist with lower-speed devices. Whether upgrading a small office network or creating a high-performance data lab, this switch ensures reliable, fast connections.

Efficient and Compact Design
With a power consumption of just 25W (without attachments), this switch delivers exceptional speed without high energy costs. Its small footprint makes it easy to mount on walls or integrate into rack setups. Dual hot-swap AC power inputs provide redundancy and ensure your network remains operational even during power changes.

Ideal for Data-Intensive Applications
The CRS504-4XQ-IN is already proving its value in demanding environments. For example, in genomics research, the switch supports high-capacity networks handling large genome datasets. Latvia became the first Baltic country to connect to the pan-European research network at 100 Gigabit speeds, thanks in part to these switches.

Flexible Network Management
A dedicated Ethernet port and RouterOS operating system simplify configuration and monitoring. The system is perfect for administrators who need a mix of high-speed connectivity, energy efficiency, and easy installation.

Technical Details

4x 100G QSFP28 ports
1x RJ45 serial console port
1x 10/100 Ethernet management port
RouterOS operating system with L5 license
64 MB RAM, 16 MB storage
Dual AC inputs for redundancy
Low energy consumption at 25W

Specifications:

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Specifications
Product Code	MK-CRS504 4XQ IN
Specifications
Product code	CRS504-4XQ-IN
Architecture	MIPSBE
CPU	QCA9531
CPU core count	1
CPU nominal frequency	650 MHz
Dimensions	320 x 185 x 44 mm
RouterOS license	5
Operating System	RouterOS
Size of RAM	64 MB
Storage size	16 MB
Storage type	FLASH
MTBF	Approximately 200'000 hours at 25C
Tested ambient temperature	-40degreesC to 70degreesC
Powering
Number of AC inputs	2
AC input range	100-240
Number of DC inputs	3 (DC jack, PoE-IN, 2-pin terminal)
DC jack input Voltage	36-57 V
2-pin terminal input Voltage	36-57 V
Frequency (Hz)	47-63
Max power consumption	41 W
Max power consumption without attachments	25 W
Cooling type	2
PoE in	802.3 bt
PoE in input Voltage	43-57 V
Ethernet
10/100 Ethernet ports	1
Fiber
Number of 100G QSFP28 ports	4
Peripherals
Serial console port	RJ45
Other
CPU temperature monitor	Yes
PCB temperature monitor	Yes
Voltage Monitor	Yes
Certification & Approvals
Certification	CE, EAC, ROHS
IP	20