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Compact desktop switch with ventilated metal case, three SFP+ ports and eight RJ45 ports

Qnap

Qnap QSW-308S-US network switch 3×10G SFP+ 8×1G RJ45

SKU CH-33PZ-40PPG MPN QSW-308S-US

A fanless desktop switch with three 10 GbE SFP+ ports and eight 1 GbE RJ45 ports for silent high-speed networking

  • FormatDesktop
  • StandardsIEEE 802.3 Ethernet IEEE 802.3u 100BASE-TX IEEE 802.3ab 1000
  • Primary Ports3 x 10 GbE SFP+ ports (Note: The 10 GbE SFP+ ports are not b
  • MAC Address Table10K
  • Jumbo Frames9KB
  • LEDsPer switch: Power / Status Per port: Speed / Link / Activity
  • Silent operation with fanless ventilated design
  • Three 10 GbE SFP+ ports for high-speed fibre links
  • Eight Gigabit RJ45 ports connect multiple wired devices
  • Low 1.8 W standby power reduces energy use
  • 9 KB jumbo frames boost large-packet throughput

Desktop 10 GbE Switch

The QSW-308S-US is a fanless desktop switch with three 10 GbE SFP+ ports and eight Gigabit RJ45 ports. It targets small offices and home labs that need a silent uplinks-to-clients aggregation point. Auto-negotiation handles speed and duplex detection on every port. The unit operates from a 100-240 V AC adapter and supports jumbo frames up to 9 KB.

Sustained Load Behaviour

Under full line-rate traffic across all eleven ports the switch draws 36 W while the fanless ventilated chassis keeps temperatures within the 0 to 40 °C operating range. With links down the standby draw falls to 1.8 W. A 10 K MAC address table and per-port LEDs give visibility during continuous operation. No moving parts mean acoustic output stays at zero regardless of throughput.

Upgrade Context

This switch replaces an all-Gigabit desktop switch when three 10 GbE fibre uplinks are required for servers, NAS units or workstations. The SFP+ ports accept only 10 GbE modules, so existing 1 GbE SFP transceivers cannot be reused. Buyers who need more than three 10 GbE ports or backward-compatible SFP+ slots should look at larger models.

Highlights

  • Silent operation with fanless ventilated design
  • Three 10 GbE SFP+ ports for high-speed fibre links
  • Eight Gigabit RJ45 ports connect multiple wired devices
  • Low 1.8 W standby power reduces energy use
  • 9 KB jumbo frames boost large-packet throughput

Specifications

BrandQnap
ModelQSW-308S-US
FormatDesktop
StandardsIEEE 802.3 Ethernet
IEEE 802.3u 100BASE-TX
IEEE 802.3ab 1000BASE-T
Primary Ports3 x 10 GbE SFP+ ports (Note: The 10 GbE SFP+ ports are not backward compatible with 1 GbE SFP.)
8 x 1 GbE (RJ45) ports
MAC Address Table10K
Jumbo Frames9KB
LEDsPer switch: Power / Status
Per port: Speed / Link / Activity
PowerPower Supply Unit: 100-240V AC, 50-60 Hz, max. 2.5A
Power Consumption (W): All ports used, line-rate traffic: 36W
Min power (W): link-down standby: 1.8W
FeaturesThe QSW-308S provides three 10 GbE SFP+ ports and eight Gigabit ports for connecting various devices.
The unique fanless design with ventilated construction provides silent operations while maintaining high performance.
Simply connect the QSW-308S to your devices and it will do the rest. It supports auto-negotiation for optimal speed and duplex detection when connecting different devices.
Dimensions1.67" x 11.42" x 5.00"
Weight1.63 lbs.
TemperatureOperating Temperature: 0 ~ 40 degree Celsius (32 ~ 104 degree Fahrenheit)
HumidityOperating Humidity: 5% ~ 95% non-condensing
Package ContentsQSW-308S
Power Cord
Power Adapter
Quick Installation Guide (QIG)
Shipping weight1.36 kg
Package size381 × 203 × 76 mm

Questions about this item

How loud and hot does the fanless QSW-308S-US get when all ports run at line rate for hours?

The switch uses a fanless ventilated chassis for silent operation. At full load it draws 36 W and is rated for 0 to 40 °C ambient temperature.

What cables and transceivers must I already have to use the three 10 GbE SFP+ ports and eight RJ45 ports?

You need SFP+ modules or direct-attach cables for the 10 GbE ports — they do not accept 1 GbE SFP — and standard Cat5e or better Ethernet cables for the eight RJ45 ports.

Will my older 100 Mbps and 1 Gbps devices work alongside the 10 GbE uplinks on this switch?

The eight RJ45 ports support IEEE 802.3u 100BASE-TX and IEEE 802.3ab 1000BASE-T with auto-negotiation, so legacy 100 Mbps and 1 Gbps gear connects directly while the SFP+ ports handle 10 GbE uplinks.

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