Product announcements · Jul 16, 2026 · 3 min read

SLZB-U2L — your USB radios, on the network

Meet the SLZB-U2L USB-to-Ethernet Bridge: put Zigbee, Z-Wave, Thread, LoRa and 433 MHz dongles on LAN, Wi-Fi or PoE — with WireGuard VPN, DDNS and OTA built in. Rolling out now.

Every smart home hits the same wall eventually: the radios want to live where the mesh needs them, and the server wants to live where you keep it. USB extension cords are not an answer.

The SLZB-U2L is. It is a modular USB-to-Ethernet bridge that makes your USB smart-home radios available across your LAN or Wi-Fi — so the Zigbee coordinator sits in the hallway ceiling where coverage is perfect, while Home Assistant stays in the rack where it belongs.

See the full picture on the SLZB-U2L product page.

SLZB-U2L USB-to-Ethernet bridge — The SLZB-U2L — a palm-sized USB-to-Ethernet bridge.

What it does

All your dongles in one place — connect several USB sticks; one is passed through to your server at a time, and you pick the active one in the web interface. Two CP2102-based dongles can run simultaneously, with more combinations coming in firmware updates.
2-to-1 USB aggregation — expose two CP2102-based dongles through a single physical USB port on your host.
LAN, Wi-Fi or PoE — RJ45 10/100, 2.4 GHz Wi-Fi, or the optional PoE module for one-cable installs.
SLZB-OS on board — WireGuard VPN, DDNS, OTA updates, per-LED control (yes, including the RJ45 port LEDs) and a multilanguage web UI.
ESPHome supported — USB host interface, USB-UART passthrough, Bluetooth Proxy — if you would rather run open source end to end.

What plugs into it

Tested and verified with the radios people actually use:

Category	Devices
Zigbee / Thread	SLZB-07, SLZB-07P7, SLZB-07P10, SLZB-07MG24
Z-Wave / Long Range	popular Z-Wave USB controllers and sticks
Everything else	any dongle on CH34X, CH340, ESP_JTAG, STM32_VCP, CDC_ACM or CP210X

That last row is doing a lot of work — those six chipsets cover nearly every hobbyist radio ever sold.

SLZB-U2L bridging USB radios over the network — Radios where the mesh needs them; the server where you keep it.

Where it fits

Run a Zigbee coordinator over LAN instead of a USB cable to nowhere.
Combine Z-Wave + Zigbee sticks in one networked hub — switch the active stick in the web UI, or run both at once on CP2102-based dongles.
Add a Thread/Matter dongle for the Google/Apple side of the house.
Deploy LoRa or 433 MHz receivers for long-range and legacy RF sensors.
Put a bridge in a remote site over WireGuard — and when the 4G/LTE uplink module lands, even wired internet becomes optional.

Important — please read before ordering

Ethernet, PoE and 4G are optional modules

The base unit connects over Wi-Fi and USB. Please choose the variant that includes the Ethernet, PoE and/or 4G module if you need those.

One USB device works at a time — two on CP2102

You can connect several USB dongles at once, but only one is passed through to your server at a time — you select the active device in the web interface. Two dongles can work simultaneously only when both are based on the CP2102 chip. Support for more combinations is expanding through firmware updates.

4G and USB: one active at a time

The optional 4G/LTE module works in USB-modem mode and shares the USB channel. It can be installed together with a USB stick, but only one of the two can work at a time — you choose which in the web interface.

Availability

Shipping now from the AliExpress and from smartlight.me — both deliver worldwide. It reaches our wider distributor network shortly.

Full specifications, wiring modes and the firmware matrix live on the product page.