MikroTik CRS504-4XQ-IN 40G QSFP+ Core Switch

The MikroTik CRS504-4XQ-IN 40G QSFP+ Core Switch is a high-performance indoor cloud router switch designed for core and aggregation roles in enterprise and data center networks. Offering 4×40G QSFP+ uplink ports and 8×10G SFP+ downlink ports, it delivers a powerful 480 Gbps switching capacity with non-blocking throughput.

Featuring dual-boot OS, redundant power supply support, and intelligent fan cooling in a compact 1U rackmount chassis, it ensures reliable Layer 2+/Layer 3 switching with advanced VLAN, LACP, and security features for demanding environments.

Here are the very detailed specifications for the MikroTik CRS504‑4XQ‑IN, ideal for data centers, enterprise cores, or compact 100 Gbps deployments:

Product Overview

• Model: CRS504‑4XQ‑IN
• Type: Cloud Router Switch (Indoor, rack/desktop)
• Form Factor: 1U chassis
• Dimensions: 320 × 185 × 44 mm
• Architecture: MIPSBE
• Operating System: RouterOS v7 (dual-boot with SwitchOS), Level 5 license
• Ingress Rating: IP20
• MTBF: ~200,000 hours @ 25 °C
• Operating Temp: –40 °C to +70 °C

CPU & Memory

• CPU: Qualcomm QCA9531, single-core @ 650 MHz
• RAM: 64 MB
• Storage: 16 MB NAND flash

Connectivity

• 100 Mbit RJ45 Port: 1 (management only)
• QSFP28 Ports: 4 × 100 Gbps each, supports break‑out to 4×25 GbE lines
• Console Port: 1 × RJ45 serial

CRS504-4XQ-IN 40G QSFP+ Core Switching & Performance

• Switch Chip: Marvell 98DX4310
• Layer 1 Throughput: 800 Gbps (non-blocking)
• Layer 2 Throughput: ~789–800 Gbps (depending on packet size)
• Forwarding Rate:
  • 64 B: ~59 Mpps (Layer 2)
  • 512 B: ~94 kpps
  • 1518 B: ~32 kpps

Power & Cooling

• AC Inputs: 2 × 100–240 V, dual hot-swappable PSU support
• DC Inputs: 3 (DC jack + 2-pin terminal + PoE-in)
  • DC: 36–57 V
  • PoE‑in: 43–57 V (802.3bt)
• Power Draw:
  • Idle (no attachments): ~25 W
  • Max: ~41 W
• Cooling: 2 temperature-controlled fans

Monitoring & Management

• Sensors: CPU temp, PCB temp, voltage monitoring
• Management Tools: CLI, WebFig, WinBox, SNMP, serial console
• Layer 2 Features: VLAN, STP/RSTP/MSTP, LACP, ACLs, IGMP snooping, port mirroring

Certifications & Compliance

• Certifications: CE, EAC, RoHS
• IP Rating: IP20 (indoor use)

Package Contents

• CRS504‑4XQ‑IN unit
• 2 × IEC AC power cords
• Rackmount ears with screws
• Quick start guide & documentation ports

Meta Description

MikroTik CRS504-4XQ-IN 40G QSFP+ Core Switch: 4×40G QSFP+ uplinks, 8×10G SFP+ ports, 480 Gbps switching, dual-boot OS, redundant PSUs, and smart cooling — ideal indoor switch for data centers and enterprise cores.

Datasheet