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Compact silver desktop switch with four RJ45 ports and two SFP+ cages

Qnap

Qnap QSW-2104-2S-A-US network switch 4×2.5GbE 2×10GbE SFP+

SKU CH-HDW0-2RF08 MPN QSW-2104-2S-A-US

An unmanaged desktop switch with four 2.5 GbE RJ45 ports and two 10 GbE SFP+ uplinks, fanless and plug-and-play

Model QSW-2104-2S-US

  • Four 2.5 GbE RJ45 ports auto-negotiate to 2.5G, 1G or 100M speeds
  • Two 10 GbE SFP+ ports provide 10 Gbps fibre uplinks
  • Fanless ventilated chassis runs silently in office or home settings
  • Built-in loop detection blocks network loops to keep traffic flowing
  • Unmanaged plug-and-play design needs no configuration to start working

Unmanaged 2.5GbE and 10GbE switch

The Qnap QSW-2104-2S-A-US is an unmanaged desktop switch with four 2.5GbE RJ45 ports and two 10GbE SFP+ ports. It targets small offices and professional workspaces needing mixed-speed connectivity without configuration overhead. Auto-negotiation handles 2.5G, 1G and 100M speeds on the copper ports.

Check cabling and SFP+ modules

Verify that existing cables support the desired 2.5GbE or 1GbE rates on the RJ45 side. The SFP+ ports require compatible transceivers or direct-attach cables purchased separately. Loop detection is built in and activates automatically to prevent network storms.

Fanless silent operation

A fanless, ventilated chassis ensures completely silent running in quiet office environments. Power consumption reaches 45 watts under load. The unit operates reliably between 10 and 100 degrees Celsius without active cooling.

Highlights

  • Four 2.5 GbE RJ45 ports auto-negotiate to 2.5G, 1G or 100M speeds
  • Two 10 GbE SFP+ ports provide 10 Gbps fibre uplinks
  • Fanless ventilated chassis runs silently in office or home settings
  • Built-in loop detection blocks network loops to keep traffic flowing
  • Unmanaged plug-and-play design needs no configuration to start working

Specifications

BrandQNAP
SeriesDesktop QSW-2104-2S-US
ModelQSW-2104-2S-A-US
Part NumberQSW-2104-2S-A-US
Shipping weight1.81 kg
Package size254 × 178 × 51 mm

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Questions about this item

What comes in the box with the QSW-2104-2S-A-US and do I need to buy SFP+ modules separately?

The switch includes four 2.5GbE RJ45 ports and two 10GbE SFP+ cages. SFP+ transceivers and cables are not included and must be purchased separately for fibre or direct-attach links.

Should I choose the 2.5GbE RJ45 ports or the 10GbE SFP+ ports for my backbone?

Use the four RJ45 ports for devices with 2.5G, 1G or 100M Ethernet interfaces. Use the two SFP+ cages with appropriate modules for 10G uplinks to a core switch, router or server.

What does the 2.5Gbps auto-negotiation figure mean once the switch is installed?

Each RJ45 port automatically detects and runs at the highest common speed — 2.5G, 1G or 100M — so a 2.5G NIC gets full throughput while older gear still connects without manual setup.

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