Smlight SLZB-MR4 vs Third Reality USBC-Dongle

Updated March 2026

Data from Amazon and official Smlight and Third Reality sites.

2026 verdict

In 2026, Smlight SLZB-MR4 is the better overall pick. The comparison tilts its way because of power, connectivity, and zigbee router, with dual network and bluetooth proxy keeping it in front. Third Reality USBC-Dongle remains a niche alternative if matter bridge matters more than the rest of the comparison. Overall, Smlight SLZB-MR4 makes more sense for most people.

Winner

Smlight

Smlight SLZB-MR4

Price unavailable right now

BUY NOW

Third Reality

Third Reality USBC-Dongle

$19.99

BUY NOW

Feature	Smlight SLZB-MR4	Third Reality USBC-Dongle	Winner
Power	USB, PoE	USB	Smlight SLZB-MR4
Connectivity	USB, Ethernet, 2.4 GHz Wifi	USB	Smlight SLZB-MR4
Zigbee Router	YES	NO	Smlight SLZB-MR4
Matter Bridge	NO	YES	Third Reality USBC-Dongle
Dual Network	YES	NO	Smlight SLZB-MR4
Bluetooth Proxy	YES	NO	Smlight SLZB-MR4
Warranty	1 year	1 year	Tie
Z-Wave Controller	NO	NO	Tie
Thread Border Router	YES	YES	Tie

Winner

Smlight

Smlight SLZB-MR4

Price unavailable right now

BUY NOW

+ Power: USB, PoE
+ Connectivity: USB, Ethernet, 2.4 GHz Wifi
+ Zigbee Router: YES
- Matter Bridge: NO vs YES

Third Reality

Third Reality USBC-Dongle

$19.99

BUY NOW

+ Matter Bridge: YES
- Power: USB vs USB, PoE
- Connectivity: USB vs USB, Ethernet, 2.4 GHz Wifi

Frequently Asked Questions (FAQ)

Which is better overall: Smlight SLZB-MR4 or Third Reality USBC-Dongle?: Smlight SLZB-MR4 has the stronger overall profile in this comparison, especially for power, connectivity, and zigbee router.
What is the biggest difference between Smlight SLZB-MR4 and Third Reality USBC-Dongle?: Power is one of the clearest differences: Smlight SLZB-MR4 lists USB, PoE, while Third Reality USBC-Dongle lists USB.
Who should buy Smlight SLZB-MR4?: Choose Smlight SLZB-MR4 if your priority is power and connectivity and that matters more than matter bridge.
Who should buy Third Reality USBC-Dongle?: Choose Third Reality USBC-Dongle if your priority is matter bridge and that matters more than power.

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