Best Cheap 2.5GbE Switches for Home Labs (Under $100)
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A cheap 2.5GbE switch is finally not an oxymoron. A few years ago, upgrading from gigabit meant spending $150+ on a 5-port TRENDnet or QNAP; today, you can pick up a solid 8-port cheap 2.5GbE switch for under $50 and still have budget left for cables. This guide picks six models that ServeTheHome has actually bench-tested, all available on Amazon, all under $100 at time of writing. If you’re wiring up a NAS, a mini PC Proxmox host, or a Wi-Fi 7 access point, one of these will fit.
Prices accurate at time of writing and subject to change.
Comparison table: cheap 2.5GbE switches under $100
| Product | Best for | Key spec | Price tier | Rating | Buy link |
|---|---|---|---|---|---|
| BrosTrend S3 | Best overall 8-port | 8× 2.5GbE, 1.3W idle | $ | ★★★★★ | Check Price on Amazon |
| BrosTrend S2 | Best overall 5-port | 5× 2.5GbE, 1.0W idle | $ | ★★★★★ | Check Price on Amazon |
| Tenda SE108 | 8-port alternative | 8× 2.5GbE, MaxLinear chip | $ | ★★★★☆ | Check Price on Amazon |
| Ubiquiti Flex Mini 2.5G | Managed, UniFi homes | 5× 2.5GbE, PoE-in or USB-C | $ | ★★★★☆ | Check Price on Amazon |
| Sodola SL902-SWTG015AS | Cheapest 10G uplink | 5× 2.5GbE + 1× SFP+ 10G | $ | ★★★★☆ | Check Price on Amazon |
| YuanLey YS25-0801 | 8 ports + 10G uplink | 8× 2.5GbE + 1× SFP+ 10G | $ | ★★★★☆ | Check Price on Amazon |
Prices accurate at time of writing and subject to change. See ServeTheHome’s mega-roundup for broader context on the sub-$100 2.5GbE switch market.
BrosTrend S3 — the cheap 2.5GbE switch to beat
If you need 8 ports and want the least expensive option that still works well, start here.
Why it makes the list: ServeTheHome made the BrosTrend S3 their outright top pick for 8-port 2.5GbE unmanaged switches in their full teardown review, calling it roughly half the price of other 8-port options while also drawing less power. At $49 on sale (and around $65 at normal pricing), it’s the kind of cheap 2.5GbE switch that makes the “do I upgrade from gigabit?” question easy. STH tested it at 1.3W idle and about 0.3W per active 2.5GbE port, which is genuinely low for this class.
Key specs:
- 8× 2.5GbE RJ45 ports, unmanaged, plug-and-play
- Fanless design
- 1.3W idle, 0.3W per active 2.5GbE port in ServeTheHome testing
- MaxLinear switch chip (not Realtek, which is more common in this price band)
- 12V 1A external power brick
- Street price around $49-65 on Amazon
Watch out for: The S3’s chassis is plastic and feels cheap compared to the metal cases on TRENDnet and Netgear switches. ServeTheHome also noted no per-port LED indicators, so you lose some at-a-glance diagnostics. At least one buyer in the review comments reported a port dying after two weeks, which they attributed to overheating — so give it some airflow and don’t bury it in a hot cabinet. Prices accurate at time of writing and subject to change.
BrosTrend S2 — same formula, 5 ports
If 8 ports is overkill, the S2 is the cheapest sensible way onto 2.5GbE.
Why it makes the list: ServeTheHome recently updated their 5-port 2.5GbE top pick from the QNAP QSW-1105-5T to the BrosTrend S2, citing lower cost and lower power consumption. At $38 in STH’s testing, this is as cheap as a 2.5GbE switch gets without going AliExpress-only. For a desk, a media console, or a single NAS plus a PC and a Wi-Fi 6 access point, five ports is plenty, and power draw is almost negligible.
Key specs:
- 5× 2.5GbE RJ45 ports, unmanaged
- Fanless design
- 1.0W idle, 0.3W per active 2.5GbE port in ServeTheHome testing
- Street price around $38-45 on Amazon
Watch out for: It uses the same plastic chassis family as the S3, so expect the same build quality — fine for a shelf, flimsy for abuse. It is unmanaged, which means no VLANs, no LACP, no port stats. If you need segmentation, step up to the Ubiquiti Flex Mini 2.5G below. Prices accurate at time of writing and subject to change.
Tenda SE108 — the BrosTrend S3 with a different sticker
Almost identical internals to the BrosTrend S3; buy whichever is cheaper the day you shop.
Why it makes the list: ServeTheHome bought the Tenda SE108 specifically to validate that it is extremely similar internally to the BrosTrend S3, and confirmed that both use the same reference PCB (10056368 V1.1) and the same MaxLinear chip. Street price in STH’s test was $49 — the same ballpark as the BrosTrend. If you’re shopping and the Tenda has a bigger coupon that day, grab it.
Key specs:
- 8× 2.5GbE RJ45 ports, unmanaged
- Fanless design with 12V DC input on the front faceplate
- 1.0W idle, 1.0W per active 2.5GbE port in ServeTheHome testing
- MaxLinear switch chip (same reference design as BrosTrend S3)
- Street price around $49-60 on Amazon
Watch out for: Since it’s a near-twin of the S3, there’s no mechanical or performance reason to pay more for the Tenda. Some ServeTheHome commenters have expressed general skepticism of Tenda’s long-term reliability, so if you’re putting it on a production homelab trunk, lean toward the BrosTrend or step up to Ubiquiti. Prices accurate at time of writing and subject to change.
Ubiquiti Flex Mini 2.5G — the managed cheap 2.5GbE switch
If you already run UniFi, this is the obvious $50 way to add five 2.5GbE ports with VLAN tags.
Why it makes the list: Also known as the USW-Flex-2.5G-5, this tiny Ubiquiti switch gives you five 2.5GbE ports with proper UniFi management for the same money as an unmanaged BrosTrend. In ServeTheHome’s teardown, it was tested at $49 and measured 1.3W idle with about 0.7W per active 2.5GbE port. The chassis is only 4.6 × 3.5 × 0.8 inches (117.1 × 90 × 21.2 mm), small enough to tuck behind a monitor or tape to the back of a desk. The main switch chip is a Realtek RTL8372N, the same silicon that drives several 4+2 (four 2.5GbE plus two 10G) switches on the market.
Key specs:
- 5× 2.5GbE RJ45 ports, UniFi-managed
- 1.3W idle, 0.7W per active 2.5GbE port in ServeTheHome testing
- Powered by PoE-in on port 5 or via USB Type-C 5V input
- Fanless, 4.6 × 3.5 × 0.8 inch plastic chassis
- Realtek RTL8372N main switch chip + RTL8221B PHY
- Street price around $49-65 on Amazon
Watch out for: You need a UniFi controller (a self-hosted container, a Cloud Key, a UDM, or UCG) to actually configure it. Without one it’s just an unmanaged 5-port switch with blinkenlights. Port 5 doubles as the PoE power input, so if you power it that way, you effectively get four free data ports. The plastic case has very limited vent area and relies on an internal heat spreader, so give it room to breathe. Prices accurate at time of writing and subject to change.
Sodola SL902-SWTG015AS — the cheapest way to a 10G uplink
Five 2.5GbE ports plus a real SFP+ 10G uplink for about the price of a pizza.
Why it makes the list: If you want to feed a 10G NAS or trunk back to a core switch, this is the entry-level pick. ServeTheHome bought the Sodola SL902-SWTG015AS and tested it at $39 — cheaper than many switches that don’t even have an SFP+ port. The chassis is a lightweight aluminum shell, and Sodola bundles four magnets so you can bolt-swap it onto a steel rack or an enclosure wall. Inside is a Realtek 30Gbps-class switch chip plus an RTL8221B DSP/PHY driving the fifth 2.5GbE port.
Key specs:
- 5× 2.5GbE RJ45 + 1× SFP+ 10GbE uplink, unmanaged
- 1.0W idle, 0.1W per 2.5GbE port in ServeTheHome’s roundup table
- Lightweight aluminum chassis
- Four included magnets for metal-surface mounting
- 12V DC barrel jack power input on the front
- Street price around $39-55 on Amazon
Watch out for: SFP+ transceivers are not included — budget separately for a compatible module. All of the ports and the DC input are on the front face, which looks busy on a desk. ServeTheHome readers also note that it’s unverified whether the SFP+ cage will negotiate at 2.5G or 5G speeds (some cheap SFP+ ports only honor 10G or 1/10G), so if your ISP ONT or NAS wants a 2.5G SFP, confirm compatibility first. Prices accurate at time of writing and subject to change.
YuanLey YS25-0801 — 8 ports plus a 10G uplink
If you need both more ports and a 10G uplink in one cheap 2.5GbE switch, this is the pick.
Why it makes the list: ServeTheHome bought the YuanLey YS25-0801 on Amazon for $69 at the time of review (listed at $90 in the current roundup table) and confirmed it is a Realtek-based 8+1 design on the same chipset family and PCB as the Davuaz Da-K9801W. In other words, it’s one of several near-identical switches, and YuanLey happens to be the branded version you can get on Amazon Prime. Eight 2.5GbE ports plus a 10G SFP+ uplink is a strong fit for a small homelab where a Proxmox box, a NAS, and a mini PC cluster all want wire-speed to a core switch.
Key specs:
- 8× 2.5GbE RJ45 + 1× SFP+ 10GbE uplink, unmanaged
- 2.7W idle, 0.7W per 2.5GbE port in ServeTheHome testing
- Fanless design
- Dual-chip Realtek switch design on a compact PCB
- Street price around $69-90 on Amazon
Watch out for: The 8+1 layout is bandwidth-oversubscribed — if every 2.5GbE port is pushing line rate at once, you’ll outrun the single 10G uplink. For most home labs this isn’t a problem (traffic bursts, not sustains), but if you’re running continuous ZFS replication plus 2.5G camera streams, plan accordingly. Transceiver cost is extra, same as the Sodola. Prices accurate at time of writing and subject to change.
How to pick a cheap 2.5GbE switch for a home lab
A few things actually matter at this price band; most of the spec-sheet noise does not.
Port count and uplink. Decide whether you need five, eight, or eight-plus-one. If every device you’re connecting is 2.5GbE and they only talk to each other on the same switch, a flat 8-port is simpler and cheaper. If you have a 10G NAS or a 10G core switch upstairs, pay the small premium for an SFP+ port now — adding one later means buying a new switch.
Managed vs unmanaged. If you need VLANs, port isolation, or LACP, you either want the Ubiquiti Flex Mini 2.5G (if you run UniFi) or a managed step-up switch outside this guide. Unmanaged works fine for a flat home network, but it limits future segmentation. See ServeTheHome’s broader guide for managed sub-$150 options.
Power and heat. At 1-3W idle, no cheap 2.5GbE switch will meaningfully move your power bill, but heat is a real failure mode. Give any fanless switch 2-3 inches of clear air on top. Plastic-case models (BrosTrend, Tenda, Ubiquiti Flex Mini) run hotter than metal ones because the chassis itself does less heat spreading.
Chip family. Most sub-$100 2.5GbE switches use either a MaxLinear chip (BrosTrend S3, Tenda SE108) or a Realtek chip (Ubiquiti Flex Mini 2.5G, Sodola SL902, YuanLey YS25-0801). Both work; MaxLinear tends to idle lower, Realtek is more common in SFP+ designs. Chip choice is a tiebreaker, not a dealbreaker.
Buy from Amazon, not AliExpress, for a first switch. ServeTheHome’s wider guide includes several good AliExpress-only switches (Horaco, Hasivo), but shipping takes weeks and warranty handling is a hassle. For $10-$20 more you get US Amazon returns and (on the TRENDnet models) a lifetime warranty.
If you’re also building out NAS storage behind this switch, see our guide on Best Budget 4-Bay NAS for Home Lab. If you need managed features (VLANs, LACP), see our guide to budget 2.5GbE managed switches.
FAQ
Is a 2.5GbE switch worth it for a home lab?
If you have any 2.5GbE devices — a modern NAS, a Wi-Fi 6/6E/7 access point, a mini PC with a 2.5GbE port, a recent gaming PC — then yes. A cheap 2.5GbE switch unlocks 2.5x the throughput over gigabit for about $40-$90, which is one of the better dollar-per-megabit upgrades in home networking right now. If every device is still 1GbE, don’t bother.
Do I need a managed or unmanaged 2.5GbE switch at home?
Unmanaged is fine for a flat home network. Managed (like the Ubiquiti Flex Mini 2.5G, or any UniFi, Omada, or MikroTik option) is worth it if you want tagged VLANs for guest/IoT separation, LACP for a NAS, or per-port monitoring. If you already run UniFi or similar, pay the few dollars extra for managed — it’s much nicer than retrofitting later.
Can I mix 2.5GbE and gigabit devices on the same switch?
Yes — every switch in this guide auto-negotiates each port down to 1Gbps, 100Mbps, or (on most) 10Mbps. A gigabit device plugged into an 8-port 2.5GbE switch simply links at 1Gbps and does not slow down the 2.5GbE ports.
What’s the difference between 2.5GbE and multi-gig?
“Multi-gig” or “NBASE-T” is an umbrella term for Ethernet that runs faster than 1Gbps over normal copper — typically 2.5G, 5G, or 10G. A 2.5GbE switch is one specific flavor; a “multi-gig” switch may support 2.5G and 5G and 10G on the same port. For most home labs, pure 2.5GbE is cheaper and covers the common devices.
Why are some cheap 2.5GbE switches fanless and others not?
All six switches in this guide are fanless, which is one of the perks of the sub-$100 class — power draw is low enough that passive cooling works. Switches with PoE output, higher port counts (16+), or active 10GBASE-T on multiple ports usually need fans because they dissipate 10-30W instead of 1-5W.
Which cheap 2.5GbE switch should you actually buy?
For most home labs the answer is simple: start with the BrosTrend S3 if you need eight ports or the BrosTrend S2 if you need five. They’re the cheapest competent models, ServeTheHome’s current top picks in each class, and they idle at 1W. If you want managed features and you already live in UniFi, swap in the Ubiquiti Flex Mini 2.5G for roughly the same money. If you need a 10G SFP+ uplink to a NAS or a core switch, grab the Sodola SL902-SWTG015AS for five ports or the YuanLey YS25-0801 for eight. Any of these turns 2.5GbE from “future upgrade” into a tonight-after-dinner project.
