Enterprise firewall or basic switch: which one actually fits your network?

Display

There is no display on either product, so this category is not relevant in the usual consumer sense. If we translate this to the practical equivalent for networking gear, the UDM-PRO wins on front-panel visibility and management feedback because it is a rackmount gateway with status indicators and a built-in controller interface. The TP-Link TL-SG108S is a very simple desktop or wall-mount switch with basic LEDs only. Winner: Ubiquiti UDM-PRO, because it gives you far more operational insight and control.

Performance

This is the biggest difference between the two. The UDM-PRO is designed to sit at the heart of a network, handling routing, firewalling, VPNs, traffic inspection, VLANs, and UniFi management. In a home lab or small business, that means it can control internet access, segment NAS and Plex traffic, and manage multiple access points and switches from one interface. The TL-SG108S is only a gigabit Ethernet switch: it forwards traffic between devices at Layer 2, with no routing, no firewall, no advanced policy engine, and no app-based management. It is excellent at being a simple switch, but it cannot replace a gateway. Winner: Ubiquiti UDM-PRO by a landslide.

Build quality and design

Both brands are well regarded, and both products have strong ratings: 4.7/5 for the UDM-PRO from 1,356 reviews, and 4.7/5 for the TL-SG108S from 11,748 reviews. The TP-Link has the simpler design: a compact metal case, fanless operation, and plug-and-play setup. It is easy to place on a desk, in a cupboard, or mount on a wall. The UDM-PRO is a 1U rackmount appliance built for structured networking, with a more serious chassis and far more connectivity aimed at a proper network rack. If you have a NAS, PoE switches, patch panel, and rack-mounted UPS, the UDM-PRO looks and fits the part. If you just want something neat behind a TV or under a desk, the TP-Link is easier. Winner: tie, because the best design depends on whether you need rackmount infrastructure or a compact switch.

Battery life

Neither product has a battery. If the real question is resilience during power cuts, the UDM-PRO is the more important device to place on a UPS because it is your router, firewall, and network controller. The TL-SG108S can also benefit from UPS backup, but it only extends switching, not the broader network functions. In a home server setup, keeping the UDM-PRO alive means your NAS, Plex server, and Wi-Fi infrastructure are more likely to remain reachable during brief outages. Winner: Ubiquiti UDM-PRO, because it has far greater network-critical value during backup power.

Price and value for money

This is where the comparison becomes decisive. At £17.99, the TP-Link TL-SG108S is extraordinary value for a basic 8-port gigabit switch, especially with 11,748 reviews and a 4.7/5 rating. For adding ports to a NAS, printer, smart TV, or games console cluster, it is hard to beat. The UDM-PRO costs £347.00, which is £329.01 more expensive. That price is justified only if you need its gateway, security, controller, and multi-device management features. If you just need extra Ethernet ports, paying nearly twenty times more for the UDM-PRO would be poor value. Winner: TP-Link TL-SG108S.

Game library/features

This category is not literally applicable, so the networking equivalent is feature set. The UDM-PRO wins decisively: it supports advanced routing, firewall rules, VLANs, VPN services, UniFi integration, and centralised management of your network stack. That makes it far more suitable for a home lab, Plex server environment, or small office where you want to isolate IoT devices, separate guest Wi-Fi, or prioritise traffic to a NAS. The TL-SG108S offers only the basics: plug-and-play switching, QoS, and IGMP snooping. Those are useful, but they are not in the same league. Winner: Ubiquiti UDM-PRO.

Overall user experience

The TP-Link TL-SG108S is the easier product to live with if your goal is simplicity. Plug it in, connect devices, and forget about it. It is quiet, cheap, and reliable for expanding a network by eight gigabit ports. The UDM-PRO is more demanding to set up, but it rewards you with a much more capable and scalable network core. For anyone running a NAS, multiple access points, Docker hosts, CCTV, or segmented home lab VLANs, the UDM-PRO turns networking from a passive utility into something you can actively manage and optimise. Winner: Ubiquiti UDM-PRO for advanced users; TP-Link for simplicity.

Overall summary: these are not direct substitutes. The TP-Link TL-SG108S is the clear buy if you only need a cheap, dependable 8-port gigabit switch. The Ubiquiti UDM-PRO is the clear buy if you need a complete network gateway with serious management and security features. In pure value terms, the TP-Link wins; in capability and network control, the UDM-PRO wins by a wide margin.