Smallest 10GbE switch and therefore cheapest
CRS305-1G-4S+INFive-port desktop switch with one Gigabit Ethernet port and four SFP+ 10Gbps ports
The CRS305 is a compact yet very powerful switch, featuring four SFP+ ports, for up to 10 Gbit per port. The device has a 1 Gbit copper ethernet port for management access and two DC jacks for power redundancy. The device is a very sleek and compact metallic case without any fans, for silent operation.
The device has a “Dual boot” feature that allows you to choose between two operating systems – RouterOS or SwOS. If you prefer to have a simplified operating system with only switch specific features, use SwOS. If you would like the ability to use routing and other Layer 3 features in your CRS, use RouterOS. You can select the desired operating system from RouterOS, from SwOS or from the RouterBOOT loader settings. All the feature set comes with a disruptive price, providing the best price/performance on the market.

Specifications
| Details | |
|---|---|
| Product code | CRS305-1G-4S+IN |
| Architecture | ARM 32bit |
| CPU | 98DX3236 |
| CPU core count | 1 |
| CPU nominal frequency | 800 MHz |
| Dimensions | 141 x 115 x 28 mm |
| RouterOS license | 5 |
| Operating System | RouterOS / SwitchOS |
| Size of RAM | 512 MB |
| Storage size | 16 MB |
| Storage type | FLASH |
| MTBF | Approximately 200’000 hours at 25C |
| Tested ambient temperature | -40°C to 70°C |
| Suggested price | $149.00 |
Powering
| Details | |
|---|---|
| Number of DC inputs | 3 (DC jack, PoE-IN) |
| DC jack input Voltage | 12-57 V |
| Max power consumption | 18 W |
| Max power consumption without attachments | 10 W |
| FAN count | Passive |
| PoE in | 802.3af/at |
| PoE in input Voltage | 12-57 V |
Ethernet
| Details | |
|---|---|
| 10/100/1000 Ethernet ports | 1 |
Fiber
| Details | |
|---|---|
| SFP+ ports | 4 |
Other
| Details | |
|---|---|
| CPU temperature monitor | Yes |
Certification & Approvals
| Details | |
|---|---|
| Certification | CE, EAC, ROHS |
| IP | IP20 |
Switching results
| CRS305-1G-4S+IN | |||||||
|---|---|---|---|---|---|---|---|
| Mode | Configuration | 1518 byte | 512 byte | 64 byte | |||
| kpps | Mbps | kpps | Mbps | kpps | Mbps | ||
| Switching | Non blocking Layer 2 throughput | 3,332.2 | 40,466.8 | 9,633.5 | 39,458.6 | 61,011.9 | 31,238.1 |
| Switching | Non blocking Layer 2 capacity | 3,332.2 | 80,933.7 | 9,633.5 | 78,917.3 | 61,011.9 | 62,476.2 |
| Switching | Non blocking Layer 1 throughput | 3,332.2 | 41,000.0 | 9,633.5 | 41,000.0 | 61,011.9 | 41,000.0 |
| Switching | Non blocking Layer 1 capacity | 3,332.2 | 82,000.0 | 9,633.5 | 82,000.0 | 61,011.9 | 82,000.0 |
Ethernet test results
| CRS305-1G-4S+IN | 98DX3236 all port test | ||||||
| Mode | Configuration | 1518 byte | 512 byte | 64 byte | |||
| kpps | Mbps | kpps | Mbps | kpps | Mbps | ||
| Bridging | none (fast path) | 104,3 | 1266.6 | 273,5 | 1120.3 | 449 | 229.9 |
| Bridging | 25 bridge filter rules | 104 | 1263.0 | 104,6 | 428.4 | 104,5 | 53.5 |
| Routing | none (fast path) | 104,3 | 1266.6 | 273,9 | 1121.9 | 343,5 | 175.9 |
| Routing | 25 simple queues | 104,3 | 1266.6 | 136,9 | 560.7 | 137,4 | 70.3 |
| Routing | 25 ip filter rules | 64,8 | 786.9 | 65,9 | 269.9 | 65,8 | 33.7 |
The device has an operating system preinstalled and licensed. No separate purchase is necessary and the product is ready to use. The device includes free software updates for the life of the product or a minimum of 5 years starting from date of purchase..
| Where to Buy a Product | |||
|
|
![]() ![]() ![]() ![]()
|
|
VISIT RETAILER ➤ |
![]() |
![]() ![]() ![]() ![]()
|
|
VISIT RETAILER ➤ |
![]() |
![]() ![]() ![]() ![]()
|
|
VISIT RETAILER ➤ |
![]() |
![]() ![]() ![]() ![]()
|
|
VISIT RETAILER ➤ |
We use affiliate links on the blog allowing NAScompares information and advice service to be free of charge to you. Anything you purchase on the day you click on our links will generate a small commission which is used to run the website. Here is a link for Amazon and B&H. You can also get me a ☕ Ko-fi or old school Paypal. Thanks! To find out more about how to support this advice service check HERE
Why People Use TrueNAS, UnRAID and Proxmox to Turnkey NAS (Synology, QNAP, etc)
Why People Prefer Turnkey NAS vs TrueNAS, UnRAID and More
The Top 5 Mistakes NAS Buyers Make
Top 5 PLEX/Jellyfin NAS of 2025
Seagate Ironwolf vs WD Red NAS Hard Drives
The BEST NAS of 2025
Access content via Patreon or KO-FI
Discover more from NAS Compares
Subscribe to get the latest posts sent to your email.












DISCUSS with others your opinion about this subject.
ASK questions to NAS community
SHARE more details what you have found on this subject
IMPROVE this niche ecosystem, let us know what to change/fix on this site