MikroTik CRS309-1G-8S+IN
Part numberCRS309-1G-8S+IN
The short answer
A managed, fanless network switch with 8 SFP+ ports, the MikroTik CRS309-1G-8S+IN (part number CRS309-1G-8S+IN) is for a mini PC owner who wants to wire machines into an SFP+ network. Its PoE budget is 0 W.
Specifications
The 8 SFP+ ports are the connections on offer, and there are no 2.5GbE or 10GbE ports. It is a managed switch, so you can configure it rather than just plug it in. It is fanless, so no fan is part of the design. With a PoE budget of 0 W, it will not power other devices over the network cable.
- 2.5GbE ports
- 0
- 10GbE ports
- 0
- SFP+ ports
- 8
- Managed
- Yes
- Fanless
- Yes
- PoE budget
- 0 W
MikroTik specification page · read 22 October 2026
Which mini PCs it fits
A switch does not slot into a mini PC the way a drive does. What decides fit is the machine's own LAN speed set against this switch's ports: 8 SFP+ and none at 2.5GbE or 10GbE.
We have not confirmed it fits the Apple Mac Studio (M5 Ultra), because that machine's LAN speed is missing from our information. The same goes for the BMAX MaxMini B4 Ultra, so we cannot say whether it fits or not. No machine is confirmed as a fit yet.
Checked against every mini PC sold on amazon.co.uk, from the specifications we hold for each machine.
Fits (7)
Fits, with a note (33)
- ACEMAGIC S1: Your mini PC connects at 1 GbE, so the link runs at that speed.
- ASUS NUC 14 Performance: Your mini PC connects at 2.5 GbE, so the link runs at that speed.
- ASUS NUC 14 Pro: Your mini PC connects at 2.5 GbE, so the link runs at that speed.
- ASUS ROG NUC: Your mini PC connects at 2.5 GbE, so the link runs at that speed.
- ASUS ROG NUC 16: Your mini PC connects at 2.5 GbE, so the link runs at that speed.
- Beelink EQ14: Your mini PC connects at 2.5 GbE, so the link runs at that speed.
- Beelink EQi12: Your mini PC connects at 1 GbE, so the link runs at that speed.
- Beelink EQR5: Your mini PC connects at 1 GbE, so the link runs at that speed.
- Beelink EQR6: Your mini PC connects at 2.5 GbE, so the link runs at that speed.
- Beelink ME mini: Your mini PC connects at 2.5 GbE, so the link runs at that speed.
- Beelink SER8: Your mini PC connects at 2.5 GbE, so the link runs at that speed.
- BOSGAME M5: Your mini PC connects at 2.5 GbE, so the link runs at that speed.
- Dell Pro Max Micro FCM2250: Your mini PC connects at 1 GbE, so the link runs at that speed.
- GEEKOM A9 Mega: Your mini PC connects at 2.5 GbE, so the link runs at that speed.
- GMKtec EVO-X2: Your mini PC connects at 2.5 GbE, so the link runs at that speed.
- GMKtec M8: Your mini PC connects at 2.5 GbE, so the link runs at that speed.
- GMKtec NucBox G10: Your mini PC connects at 2.5 GbE, so the link runs at that speed.
- GMKtec NucBox K11: Your mini PC connects at 2.5 GbE, so the link runs at that speed.
- GMKtec NucBox K13: Your mini PC connects at 5 GbE, so the link runs at that speed.
- GMKtec NucBox K8 Plus: Your mini PC connects at 2.5 GbE, so the link runs at that speed.
- GMKtec NucBox M6 Ultra: Your mini PC connects at 2.5 GbE, so the link runs at that speed.
- HP Z2 Mini G1a: Your mini PC connects at 2.5 GbE, so the link runs at that speed.
- Lenovo ThinkCentre M70q Gen 5: Your mini PC connects at 1 GbE, so the link runs at that speed.
- Lenovo ThinkCentre M75q Gen 5: Your mini PC connects at 1 GbE, so the link runs at that speed.
- Lenovo ThinkCentre M90q Gen 5: Your mini PC connects at 1 GbE, so the link runs at that speed.
- Lenovo ThinkCentre M90q Gen 6: Your mini PC connects at 1 GbE, so the link runs at that speed.
- Lenovo ThinkCentre neo 50q Gen 5: Your mini PC connects at 1 GbE, so the link runs at that speed.
- Lenovo ThinkCentre neo 50q Gen 6: Your mini PC connects at 1 GbE, so the link runs at that speed.
- Lenovo ThinkStation P3 Tiny: Your mini PC connects at 1 GbE, so the link runs at that speed.
- Lenovo ThinkStation P3 Tiny Gen 2: Your mini PC connects at 1 GbE, so the link runs at that speed.
- Lenovo ThinkStation P3 Ultra SFF Gen 2: Your mini PC connects at 1 GbE, so the link runs at that speed.
- MINISFORUM MS-02 Ultra: The switch runs at 10 GbE, below this machine's fastest port.
- MINISFORUM UM890 Pro: Your mini PC connects at 2.5 GbE, so the link runs at that speed.
Not confirmed (3)
- ASUS ROG NUC 15: Not confirmed: no record of this machine's network speed.
- Beelink EQi13: Not confirmed: no record of this machine's network speed.
- Beelink GTi14 Ultra: Not confirmed: no record of this machine's network speed.
Before you buy
Check your mini PC's LAN speed against the switch before buying; for the two machines named above we have not confirmed it. The switch has no PoE budget and no 2.5GbE or 10GbE ports. For anything beyond this, the maker's own specification page is the place to look.
Common questions
Does the MikroTik CRS309-1G-8S+IN have PoE?
No. Its PoE budget is 0 W, so it will not power cameras, access points or other devices over the network cable.
Is the CRS309-1G-8S+IN fanless and managed?
Yes to both. The switch is fanless, and it is a managed switch, so you can configure it rather than treat it as a plain unmanaged box.
Will it work with the Apple Mac Studio (M5 Ultra)?
We have not confirmed it. The machine's LAN speed is missing from our information, and that is what decides fit against this switch's 8 SFP+ ports.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.