Your Network Upgrade: The MikroTik CRS305-1G-4S+IN Brings 10 Gigabit Power
Does your Network groan under the load of data-intensive applications, do backups take forever, and does video editing from the NAS become a test of patience? Conventional 1-Gigabit connections are simply overwhelmed. Until now, switching to 10-Gigabit hardware has often been associated with high costs, noisy devices, and huge dimensions. But that's over now! The MikroTik CRS305-1G-4S+IN is the answer to your Network challenges. This compact and powerful Ethernet Switch revolutionizes access to 10-Gigabit networks by making high-speed connectivity affordable and space-saving. With its four 10G SFP+ Ports and an additional Gigabit Ethernet Port, it provides you with the necessary bandwidth to effortlessly handle even the most demanding tasks. Simply plug in suitable SFP / SFP+ Modules or DAC Cable and experience performance that will inspire you!
Maximum Flexibility: Dual Boot with RouterOS and SwOS
The CRS305-1G-4S+IN is a true multi-talent: Thanks to the ingenious Dual Boot System, you can choose whether to operate it as a fast Layer 2 switch with the lean SwOS or as a full-fledged router with the powerful RouterOS (Level 5). SwOS offers you a simplified, pure switch interface that is perfect for network beginners or users who only need basic switching functions. RouterOS, on the other hand, offers advanced Layer 3 functions and detailed configuration options for experienced users or Homelab enthusiasts who require routing, firewall rules, or more complex VLAN Configurations. Whether VLANs, port isolation, or complex routing and firewall rules – you have full control. This makes the MikroTik Switches attractive for both 'plug-and-play' users and 'power users'.
Whisper-Quiet & Reliable: Fanless 10G Switch with Redundant Power
Invest in the future of your network with a device that grows with your requirements. The MikroTik CRS305-1G-4S+IN offers you not only outstanding performance and flexibility but also absolutely silent operation thanks to passive cooling. The fanless design is not only quiet but also ideal for dust-sensitive environments such as workshops or homelab racks, where fans could draw in dust and shorten the lifespan of electronic components. Passive cooling not only reduces noise but also maintenance effort and the risk of failure. In addition, the triple redundant power supply via two DC jacks and PoE-In (802.3af/at) ensures maximum reliability, so your network always stays online. This makes it the ideal choice for offices, home offices, or small server rooms where noise is a critical factor.
The Core Aggregator for Your 10GbE Islands
Many competitors often market their 10GbE Switches as standalone solutions. However, the MikroTik CRS305-1G-4S+IN is ideal for connecting multiple 10GbE devices (such as NAS, workstations, servers) in a small area and then connecting this 'island' to a larger Gigabit network via the 1GbE port or one of the SFP+ Ports. This enables cost-effective 10GbE expansion without having to convert the entire network to 10GbE. Use this SFP+ Switch 4 Port as a central hub for your high-speed devices and benefit from excellent 10G SFP+ Transceiver Compatibility.
Strengths & Notes at a Glance
- Pro: Excellent price-performance ratio for 10GbE entry.
- Pro: High flexibility through Dual-Boot operating systems (RouterOS/SwOS).
- Pro: Compact, fanless design with redundant power supply (PoE-In, 802.3af/at).
- Note: Limited CPU performance for demanding Layer 3 routing at full 1 Gbit/s throughput.
- Note: Heat generation with RJ45 SFP+ transceivers may require additional cooling.
Specifications & Features
| Manufacturer: | MikroTik |
| Model: | CRS305-1G-4S+IN |
| Product Type: | Gigabit Switch with SFP+ |
| CPU Architecture: | MIPSBE |
| CPU Model: | QCA9531 |
| CPU Clock Frequency: | 800 MHz |
| RAM: | 128 MB |
| Storage: | 16 MB Flash |
| Ethernet Ports: | 1 x Gigabit Ethernet (RJ45) |
| SFP+ Ports: | 4 x 10G SFP+ |
| Serial Port: | 1 x RJ45 |
| Operating System: | RouterOS (Level 5) / SwOS (Dual Boot) |
| Switching Capacity: | 40 Gbit/s (Full Duplex) |
| Forwarding Rate: | 29.8 Mpps (64-byte packets) |
| Jumbo Frames: | Yes, up to 9 KB |
| VLAN Support: | Yes (IEEE 802.1Q) |
| Link Aggregation (LACP): | Yes |
| Power Supply: | 2 x DC Jack, PoE-In (passive, 12-57V, 802.3af/at) |
| Max. Power Consumption: | 10 W |
| Cooling: | Passive (fanless) |
| Operating Temperature: | -20°C to +70°C |
| Dimensions (LxWxH): | 141 x 115 x 28 mm |
Scope of Delivery
| 1 x MikroTik CRS305-1G-4S+IN Gigabit Switch |
| 1 x 24V 0.8A Power Adapter |
Frequently Asked Questions (FAQ)
Can the MikroTik CRS305-1G-4S+IN be used as a router for a 1 Gbit/s internet connection?
The CRS305-1G-4S+IN is primarily a switch. Although it offers Layer-3 functions with RouterOS, its CPU is not powerful enough to route a 1 Gbit/s internet connection at full throughput, especially if additional features like firewall rules or QoS are enabled. For this task, more powerful routers such as the MikroTik RB5009 or hAP ax are recommended.
Which operating systems can I use on the MikroTik CRS305-1G-4S+IN and what are they suitable for?
The switch features a dual-boot function and can be operated with either RouterOS or SwOS. SwOS is a simplified operating system specifically designed for pure switch functions, offering easy configuration via a web interface. RouterOS is a full-featured operating system that enables advanced routing, firewall, and VPN functions in addition to switching.
Is the MikroTik CRS305-1G-4S+IN fanless and therefore silent?
Yes, the MikroTik CRS305-1G-4S+IN is housed in a sleek metal enclosure and designed to be fanless, enabling silent operation.
Does the CRS305-1G-4S+IN support PoE (Power over Ethernet)?
Yes, the switch supports PoE-In according to 802.3af/at standards as well as passive PoE in the 12-57 V range via its 1 Gbit Ethernet port. This allows the device to be powered via PoE.
Can the 1 Gbit Ethernet port of the CRS305-1G-4S+IN also be used for normal data traffic and not just for management?
Yes, the 1 Gbit copper Ethernet port can be used for both management access and forwarding regular data traffic. It can be integrated into the switch fabric, for example, to establish a connection to an existing Gigabit network.
Are the SFP+ ports of the MikroTik CRS305-1G-4S+IN only suitable for 10 Gbit/s modules or also for other speeds?
The SFP+ ports of the CRS305-1G-4S+IN are primarily designed for 10 Gbit/s SFP+ modules but also support 1.25 Gbit SFP modules. However, they do not support native 2.5 Gbit/s or 5 Gbit/s speeds, unless special SFP+-to-RJ45 transceivers that support these multi-gig speeds are used.
Homepage: http://www.mikrotik.com/