The TP-Link TL-SG105S-M2 is one of TP-Link’s most accessible 2.5 Gigabit switches — a five-port multi-gigabit unmanaged box that takes the familiar SG105 form factor and lifts every port to 2.5 Gbps. It is well timed: with WiFi 7 routers, Mini-PCs and modern NAS units increasingly shipping 2.5GbE NICs, gigabit is starting to feel like the bottleneck. This TP-Link TL-SG105S-M2 review covers the specifications, performance and value.
TP-Link TL-SG105S-M2 | 5-Port Multi-Gigabit 2.5G Ethernet Switch | Unmanaged Network Switch | Ethernet Splitter | Plug & Play | Desktop/Wall Mount | Silent Operation
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TP-Link TL-SG105S-M2 at a Glance
| Component | Specification |
|---|---|
| Port count | 5 ports |
| Port speed | 100M / 1G / 2.5G Multi-Gigabit |
| Switching capacity | 25 Gbps non-blocking |
| Management | Unmanaged (plug-and-play) |
| PoE support | No |
| SFP uplinks | None |
| Form factor | Desktop / wall-mount, steel case |
| Cooling | Fanless (silent) |
| Approx price | around $80 |
Throughput & Real-World Speed
The headline number is straightforward: every port on the TL-SG105S-M2 runs at up to 2.5 Gbps, which is 2.5x the throughput ceiling of a standard gigabit switch. To actually achieve those speeds you need both ends of each link to be 2.5G-capable — a NIC, a router uplink port, a NAS Ethernet port — and a CAT5e or CAT6 cable of good quality. With a 2.5G NIC on a PC and a 2.5G port on a NAS, large file transfers commonly hit roughly 280 MB/s sustained, well above the ~117 MB/s ceiling of gigabit. The switching fabric is non-blocking at 25 Gbps, so every port can run at 2.5G simultaneously. If your devices are still gigabit only, the switch will simply auto-negotiate down to 1G — there is no penalty, and the upgrade is future-proof. For the network basics, see our low-latency gaming network guide.
Managed vs Unmanaged Capabilities
The TL-SG105S-M2 is fully unmanaged, just like its gigabit sibling. No web interface, no VLANs, no QoS — you plug it in and it works. For most homes and small offices upgrading from gigabit, that is the right answer: you want a multi-gigabit switch that is as simple to deploy as the gigabit one it replaces. If you need VLANs for IoT segmentation or QoS for traffic prioritisation, you would need to step up to a managed 2.5G switch — but the L2+ managed multi-gigabit switches still command a meaningful price premium. The unmanaged SG105S-M2 keeps the cost down and the deployment simple.
PoE Power for IP Cameras / APs
The TL-SG105S-M2 does not include PoE. Multi-gigabit access points and cameras that need PoE — for example Wi-Fi 7 APs with 2.5G uplinks — will need either an inline PoE injector or a separate PoE switch. This is a known limitation of the basic SG105S-M2; buyers who want both 2.5G and PoE need to look at TP-Link’s PoE-capable multi-gigabit models, which are noticeably more expensive. For a desk install with a 2.5G PC, a 2.5G NAS and a 2.5G uplink to the router, the basic SG105S-M2 is the right tool.
Build Quality, Heat & Noise
TP-Link houses the SG105S-M2 in a sturdy steel case, the same construction philosophy as the gigabit SG105. The shell aids heat dissipation, which is more important on a multi-gigabit switch because the higher speeds mean more electrical work in the silicon. The switch is fanless and therefore silent, well suited to a living room or bedroom desk. In normal use it runs noticeably warmer than a gigabit switch — to be expected — but never alarmingly hot. To get the rated 2.5G speeds across every port, pair the switch with CAT5e or CAT6 cable in good condition; older cables are usually fine but a degraded link can drop the negotiation back to 1G. See our best Ethernet cables for gaming guide for cable choice.
Best For – Gaming Home / SMB / Pro
The TL-SG105S-M2 is for the user who wants to lift the home network’s wired ceiling above gigabit without paying for full 10GbE. The most useful pairings are with a 2.5G NAS — where large file transfers really do feel 2-3x faster — and with a WiFi 7 access point, where a 2.5G uplink prevents the AP becoming the bottleneck for fast clients. For gaming specifically, gigabit was never the limit, so the upgrade is more about file workflows than online games. For a small office with a 2.5G NAS and 2.5G workstations it is also a sound pick. Pros who need PoE or VLANs must look elsewhere. For complementary gear, see our best NAS for home and small office.
Verdict
At around $80 the TP-Link TL-SG105S-M2 is one of the easiest ways to break the gigabit barrier for a desk cluster. It is sturdy, silent, fully 2.5GbE on every port, and plug-and-play. The combination of a 2.5G NAS, a 2.5G NIC and this switch transforms large-file workflows in a way gigabit never could. The limitations are the same as its gigabit sibling — no PoE, no management — and they are honest trade-offs for the price. For a home user upgrading from a gigabit desk switch, it is an easy recommendation. Buyers with eight devices to wire should consider the SG108S-M2 instead. For the wider network, see our best WiFi 7 routers guide.
Frequently Asked Questions
Do I need 2.5G NICs to use the TL-SG105S-M2?
Only to gain the speed benefit. The switch auto-negotiates down to gigabit for older devices, so the upgrade is non-disruptive, but to actually transfer at 2.5 Gbps you need 2.5G-capable NICs at both ends of the link.
Does the TL-SG105S-M2 need special cables?
CAT5e is fine for 2.5GbE at typical home distances, though CAT6 or CAT6a is a sensible future-proof choice. A degraded older cable may force the link to negotiate down to gigabit.
Is the TL-SG105S-M2 worth it over the standard TL-SG105?
Only if you have, or plan to add, 2.5G-capable devices — most commonly a 2.5G NAS, a 2.5G WiFi 7 access point or a 2.5G PC NIC. If all devices are gigabit only, the cheaper SG105 is fine.
Does the TL-SG105S-M2 support PoE?
No. It is a non-PoE multi-gigabit switch. Buyers who need both 2.5G and PoE must choose a PoE-capable multi-gigabit model.
More Network Switch Reviews
- TP-Link TL-SG108S-M2 Review: 8-Port 2.5G Switch (2026)
- NETGEAR GS305 Review: 5-Port Gigabit Switch (2026)
- NETGEAR GS308 Review: 8-Port Gigabit Switch (2026)
- NETGEAR GS316 Review: 16-Port Gigabit Switch (2026)
- TP-Link TL-SG105E Review: 5-Port Easy Smart Switch (2026)
- D-Link DGS-105 Review: 5-Port Gigabit Switch (2026)
- TP-Link SG2428LP Review: 24-Port PoE+ Gigabit Switch (2026)
- Tenda 8-Port 2.5G Switch Review: Multi-Gigabit Network (2026)
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