Choosing a switch and NIC for a small lab

If the next purchase is the router rather than another switch, our fanless firewall appliance guide compares Protectli and Qotom configurations and walks through the first OPNsense boot.

Which switch and NIC should you buy?

Get your NAS and mini PCs talking faster without buying a switch full of features you will never use. Pick the TP-Link TL-SG105S-M2 for a few 2.5GbE devices, TL-SG108S-M2 for more copper connections, or MokerLink 2G08110GS when you want a separate 10GbE SFP+ link.

Choose NETGEAR MS308E for configurable VLANs. Add StarTech ST2GPEX only when a compatible computer needs a 2.5GbE port. The Omada DS105G-M2 and D-Link DMS-105 below give you two more five-port alternatives.

Specs come from the makers; the transfer-rate examples are calculated line-rate ceilings.

Compare the buying picks

Product	Copper ports and supported rates	Management / controller	Fanless
TP-Link TL-SG105S-M2	5 × RJ45; 100 Mbps / 1 / 2.5 Gbps	Unmanaged; no configurable VLAN controls	Yes
NETGEAR MS308E	8 × RJ45; 100 Mbps / 1 / 2.5 Gbps	Web management; 802.1Q and port-based VLANs; 64 VLANs	Yes
StarTech ST2GPEX	1 × RJ45; 10 / 100 Mbps / 1 / 2.5 Gbps	Host NIC; Realtek RTL8125B; 802.1Q tagging	Not stated in reviewed specs

Specifications: TP-Link exact-model datasheet, NETGEAR MS305E/MS308E datasheet, and StarTech ST2GPEX datasheet. Use the MS308E column, not the five-port MS305E column.

A NIC connects a computer; a switch connects multiple endpoints. Choose the switch by endpoint count and management requirements, then add host adapters only where the intended link needs them.

Best 2.5GbE switch: five ports, eight ports or a 10G SFP+ link?

Your NAS has a 2.5GbE socket. So does your mini PC. Give them a switch that lets those ports stretch their legs—then choose how many other devices you want to connect.

Switch	Ports	Control	Max W
TP-Link TL-SG105S-M2	5 × 2.5G copper	Unmanaged	5.81, V1
TP-Link TL-SG108S-M2	8 × 2.5G copper	Unmanaged	8.87, V1
MokerLink 2G08110GS	8 × 2.5G copper + 1 × 10G SFP+	Unmanaged	Not published here
Omada DS105G-M2	5 × 2.5G copper	Unmanaged	5.81, V1
D-Link DMS-105	5 × 2.5G copper	Unmanaged	4.918, A1
NETGEAR MS308E	8 × 2.5G copper	Web / VLANs	See datasheet

Sources: TP-Link’s TL-SG105S-M2 V1, TL-SG108S-M2 V1 and DS105G-M2 V1 specifications; MokerLink 2G08110GS; D-Link DMS-105 and its A1 datasheet. The NETGEAR features remain from its datasheet above.

All six switches are fanless and provide no PoE output. Only the MokerLink has a separate faster uplink. Those power figures are published maxima for the named revisions, not idle readings or a like-for-like efficiency test. Fanless means no cooling fan; it is not a measured noise score. Use a suitable PoE switch or injector to power cameras or access points over Ethernet.

Just a few devices: TL-SG105S-M2

Keep the TL-SG105S-M2 as the default for a NAS, a couple of computers and an upstream connection. Five ports are easy to fill: reserve one for upstream and you have four endpoint connections left. Already planning a fifth endpoint? Buy the eight-port model now.

The Omada DS105G-M2 and D-Link DMS-105 are five-port alternatives for the same plug-and-play role. The Omada name does not add controller management to the DS105G-M2: TP-Link explicitly says no central management is required. Choose the NETGEAR instead when you want to configure VLANs. D-Link’s compact metal DMS-105 is another straightforward fit when you just need five multigig ports.

More copper connections: TL-SG108S-M2

Choose the TL-SG108S-M2 when you want eight 2.5GbE ports without managing the switch. One upstream connection leaves seven endpoints. Each copper port tops out at 2.5GbE; its advertised total switching capacity is not the speed of a single connection.

This is the clean step up for a NAS, multiple mini PCs and a workstation that all use copper 2.5GbE. The mini-PC buying guide includes machines with faster built-in network ports, so you can skip an extra NIC when the host already has what you need.

Want 2.5G with a 10G SFP+ uplink? MokerLink

Choose the MokerLink 2G08110GS for eight 2.5GbE copper ports plus one separate 10GbE SFP+ slot. Connect a compatible NAS or upstream switch through SFP+ and all eight copper ports remain available for endpoints. The maker lists 1G, 2.5G and 10G modules for that slot.

SFP+ is a slot, not an RJ45 socket. Plan a compatible direct-attach cable (DAC), or matching supported modules and fibre, at both ends. A NAS with only a copper 2.5GbE socket still connects through one of the eight copper ports. The UGREEN vs Synology NAS comparison separates those two-bay 2.5GbE boxes from the DXP4800 Plus with a copper 10GbE port; that copper port needs a supported conversion path to use this SFP+ slot.

A 10GbE uplink gives concurrent transfers more room than a shared 2.5GbE link, but it does not make an individual 2.5GbE client run at 10GbE. In a chosen example, four clients each offering 2.5Gb/s total 10Gb/s: that is 4:1 against one 2.5Gb/s upstream link before overhead. Actual traffic and storage speed decide how much of that capacity you use.

Do you even need 2.5GbE?

Buy it when a healthy gigabit link is what holds back your NAS transfers. 1Gb/s is 125 MB/s before overhead; 2.5Gb/s is 312.5 MB/s. If disk reads, NAS writes, encryption or the application already keep the job below the gigabit ceiling, swapping the switch alone will not fix it. Try a network-only test and a real file transfer before you order more hardware.

Local NAS traffic can use the faster switch even if your internet connection is slower. Put the NAS and the clients that copy to it on the faster path; keep working gigabit equipment for devices whose jobs already fit.

More connections or VLANs: NETGEAR

The MS308E buys eight 2.5GbE ports plus useful controls. Its vendor datasheet lists web management, tagged and port-based VLANs, port mirroring and cable diagnostics. With one upstream connection, seven ports remain for endpoints. For five to seven endpoints under that assumption, it fits where the TP-Link runs out of connections.

It also makes sense for a smaller bench that specifically needs VLAN controls. Configurable separation and visibility are reasons to pay; a vague hope that “managed” makes every transfer faster is not.

A VLAN separates traffic according to the configuration; it does not supply the entire access policy. Decide which component routes or filters between networks, then test both the paths that should work and those that should be blocked. Keep a recoverable configuration and a way to reach management while changing settings.

Check the E in MS308E. The MS308 is a different model; choose MS308E for these management features. The US ordering code is MS308E-100NAS. Skip this pick if you need more connections than its port budget, PoE output or a 10GbE uplink.

A computer needs a faster port: StarTech

The ST2GPEX adds one 2.5GbE copper port through PCIe 2.0 x1. StarTech explicitly names Realtek RTL8125B in its chipset field and includes standard and low-profile brackets. That gives you an exact adapter to check, rather than relying on an anonymous listing’s controller claim.

Before ordering, check the motherboard manual for an available electrically connected slot, resource sharing and clearance. A long slot’s appearance does not tell you which resources remain available with other cards installed. Confirm the correct bracket and space for the card and cable with the enclosure closed.

Then check the exact operating system, version and driver route. Do not turn a controller name into a blanket promise of hypervisor compatibility. Decide whether the host or a virtual machine will own the NIC; the Proxmox versus direct Docker guide explains that ownership decision.

The card supports VLAN tagging, which is a host-interface capability. It does not add switch ports or replace the NETGEAR’s VLAN controls. Keep an existing suitable 2.5GbE interface instead of buying a second one just to match this shortlist.

Budget the complete transfer path

A switch alone cannot turn a gigabit-only endpoint into a 2.5GbE endpoint. Check both computers, every traversed switch connection and the cabling. If the desired transfer stays within the new switch, its path differs from traffic that must cross a slower upstream connection.

Buy fewer host adapters when compatible interfaces are already present. Check cables and the complete link rather than treating a switch and two NICs as a required bundle.

Both switches and the NIC use copper RJ45 connections. Follow the exact equipment’s cable-category and distance requirements, and check existing runs before replacing them. StarTech documents 2.5GbE over suitable Cat5e cabling; the connector fitting is not evidence that a damaged or unsuitable cable will sustain the intended link.

For backup transfers, also check source reads, destination writes and application processing. The NAS recovery guide keeps faster copying separate from a backup that can actually be restored.

Buying a small ARM endpoint as well? Our Raspberry Pi alternatives guide separates Fast Ethernet, Gigabit and dual-2.5-GbE boards, so the host purchase matches the rest of the link.

Adding Wi-Fi 7 to that wired backbone? Our homelab router guide compares a simple 2.5GbE switch uplink, Flint 3 tinkering and an ASUS 10G/VLAN option.

When to keep 1GbE or plan for 10GbE

Keep working gigabit equipment if it meets the required transfers and connection count. A faster purchase needs a specific benefit: less waiting on a network-limited copy, more simultaneous capacity or management features you actually need.

For perspective, decimal line-rate arithmetic gives 125 MB/s at 1 Gbit/s, 312.5 MB/s at 2.5 Gbit/s, and 1,250 MB/s at 10 Gbit/s, before overhead. These are ceilings from dividing bits by eight, not file-copy predictions. Storage, protocol overhead and endpoint processing still matter.

The MokerLink adds one 10GbE SFP+ connection; the other shortlisted switches stay at 2.5GbE per port. For a bigger 10GbE path, budget suitable NICs, switch interfaces and supported cables or modules together. For second-hand adapters, use the used enterprise gear checklist to verify exact board identity, firmware access and return terms.

Check the purchase within the return window

Keep the working setup available while checking the new hardware in your setup. Record exact model/revision, firmware, operating system, driver, slot and cable details. Verify the actual negotiated rate on each intended connection before judging a copy result.

Use the iperf3 documentation to plan a network-only test. Check a single stream and the reverse direction separately; multiple parallel streams answer a different aggregate-throughput question. Keep tool version, duration, endpoint roles and system load with the results so repeated runs mean something.

Then run the actual transfer. For a managed switch, also save the configuration and check the intended VLAN behaviour after a controlled restart. If the result misses the requirement, inspect the link, errors, software and storage before buying the next part.

Adding local video? Our PoE camera guide for Frigate matches cameras to their lighting and stream settings, with a small PoE switch option for powering them.

Buying a NAS to use those faster links? Our UGREEN vs Synology NAS comparison compares the two-bay 2.5GbE choices with a four-bay 10GbE alternative.

The pick to bring home

Choose TL-SG105S-M2 for a few devices, TL-SG108S-M2 for more copper ports, and MokerLink 2G08110GS for a separate SFP+ uplink. Choose MS308E when VLAN controls are part of the plan. Keep the NIC you already have if it supports the link you need—then spend the saved effort on a transfer you actually want to finish faster.

Need a network that fits in your travel bag instead? Our Beryl 7 vs Beryl AX travel-router guide covers hotel Wi-Fi, compact wired connections and VPN access back to your homelab.

For a camera network, use the Frigate PoE switch guide to choose powered ports and a camera power budget alongside VLAN controls.

No spare PCIe slot in your laptop or mini PC? The 2.5GbE USB adapter guide compares USB-A/USB-C options and walks through Linux driver and link checks.

When the next link needs 10GbE

Have an SFP+ uplink ready to use? Our 10GbE DAC vs RJ45 vs fibre guide matches the cable route to your equipment, including copper-module heat and coding at both ends.

Ready to choose the switch itself? Our 2.5GbE switch buying guide compares unmanaged five/eight-port models, copper VLAN management, 10G SFP+ uplinks and multigig PoE.

Ready to upgrade the host too? Our 10GbE network-card guide picks SFP+, RJ45 and Thunderbolt adapters by slot, cabling and Linux driver.