Linksys LGS124P 24-Port PoE+ Gigabit Switch: features, specs and uses

The Linksys LGS124P is an unmanaged Gigabit switch with 24 ports, 12 of which supply Power over Ethernet Plus (PoE+). It is meant for offices, small businesses and IP surveillance setups where one cable can carry both data and power to devices such as cameras and access points. This page explains what each specification means.

Gigabit speed on every port

The switch offers autosensing Gigabit Ethernet ports with wired speeds up to 1,000 Mbps. Autosensing means each port detects the speed of the connected device and adjusts, so older 100 Mbps equipment can share the switch with newer gear. Linksys positions it for moving large files to servers, drives and printers on a local network.

How the PoE+ ports are arranged

Twelve of the 24 ports supply PoE+: ports 1 to 6 and 13 to 18. The remaining ports carry data only, which is where you would connect computers, a router or a printer. PoE+ (IEEE 802.3at) is the standard that delivers more power per port than basic 802.3af PoE, typically up to about 30 watts. The listing names both standards among those supported.

The 120W power allowance

The switch has a dedicated PoE allowance of 120W, shared among all powered ports. Linksys lists power-saving features, including cable-connected detection and a sleep mode. In practice, a few cameras and access points fit comfortably, but twelve devices each drawing 15W would exceed the allowance. Add up your devices' maximum draw before planning.

Quality of Service

Quality of Service (QoS) lets the switch prioritize certain traffic, so something time-sensitive, like voice or video, is handled ahead of bulk transfers when the network is busy. Most users of an unmanaged switch won't see a setting for it, because it works automatically.

Build and connections

The housing is metal, and the unit has one fan. It measures 7.9 x 17.3 x 1.8 inches (about 20 x 44 x 4.6 cm), with a width consistent with a standard rack shelf, and weighs 6.0 lb (about 2.7 kg). Power input is 100-240 VAC at 50/60 Hz. The listing notes that models LGS124PV2 and LGS124P are the same. Check the manual for mounting options. Network standards listed include IEEE 802.3, 802.3u, 802.3x, 802.3ab, 802.3az, 802.3af and 802.3at.

Who it suits

It suits small offices, shops and homes with a handful of PoE devices and many wired computers, where plug-and-play simplicity matters more than detailed control. Anyone needing VLANs or remote management would typically look at a managed switch.

What to check before you buy

• PoE needs: confirm each device's power class and that the total stays under 120W.
• Which ports supply power: only ports 1-6 and 13-18 are PoE+, so plan your wiring.
• Fan noise: one fan means some sound; consider where it will sit.
• Mounting: check the manual or box for rack or desktop hardware.
• Electrical: follow the manual and local electrical codes when installing.

The short version

• 24-port unmanaged Gigabit switch with autosensing ports.
• 12 PoE+ ports (1-6 and 13-18) sharing a 120W allowance.
• QoS traffic prioritization, power-saving detection and sleep mode.
• Metal housing with one fan; 100-240 VAC input.
• About 6.0 lb; plug and play.

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