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LGB300 Series Gigabit Ethernet Switch - EU Power Supply, 4-Port

Powered through your PC's USB port so there's no need to find a power socket.


68 In Stock
1 Year Double Diamond™ Warranty (Standard)

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Product Features

  • Bring Gigabit speeds to your small network.
  • Convenient, compact size is perfect for use in small offices or at home.
  • Four autosensing 10-/100-/1000-Mbps ports.
  • Autonegotiating half-/full-duplex.
  • Auto-MDI/MDI-X function on all ports, so no need for cross-pinned cables.
  • Non-blocking, store-and-forward switching method.
  • Easy-to-see LED indicators enable you to view network status.
  • Easy plug-and-play operation.
  • Compact so you can tuck it neatly in back of your PC.
  • Can be powered through a PC's USB port so there's no need to find a spare power socket. Or use the included power supply.


Powered through PC's USB port so no need to find power socket. Bring Gb speeds to small network. Convenient, compact size is perfect for use in small offices or home. Four autosensing 10/100/1000Mbps ports. Autonegotiating half/full-duplex.

Tech Specs

Approvals CE; UL® Listed 09CA19611; FCC, CB, TUV
Connectors (4) RJ-45, (1) Power
Dimensions 0.8"H x 2.4"W x 3.1"D (2 x 6.2 x 7.9 cm)
Filtering/Forwarding Rate 10 Mbps: 14,880 pps; 100 Mbps: 148,800 pps; 1000 Mbps: 1,488,000 pps
Indicators LEDs: Per Unit: (1) Power; Per Port: (1) LINK/ACT, (1) 1000M
MAC Addresses 1K
Power From computer's USB port via power cable (included) or 100-240 VAC, 50-60 Hz external power supply (included); Output: 5 VDC, 1.2 amps, 6 watts max.
Standards IEEE 802.3 10BASE-T, IEEE 802.3u 100BASE-TX, IEEE802.3ab 1000BASE-T, IEEE802.3x Flow Control
Switching Method Store-and-forward
Weight 0.4 lb. (0.2 kg)

* Technical specification weight is the unit weight. It is not the packaged shipping weight. For shipping weight, please contact Black Box customer service at 877-877-2269.



Double Diamond Warranty Diamond

Double Diamond™ Warranty (Standard)

Take the risk out of equipment purchases with the Double Diamond™ Warranty from Black Box Network Services.

The Double Diamond Warranty is our warranty that protects your Black Box® brand products* from accidental damage, including drops, water, and power surges.

The 4-Port Gigabit Ethernet Switch with EU Power Supply comes with a standard 1 Year Double Diamond™ Warranty (Standard) already included.

During the warranty period, Black Box Network Services will repair or replace your damaged equipment within one week of receipt at NO CHARGE!*

Plus, get an Extended Double Diamond Warranty.

You can also extend your warranty or protect a previously purchased Black Box® brand product** for an additional year—for only 10% of the purchase price! Or, extend your coverage for a full three years for only 20% of the purchase price!

Ordering an extended warranty is easy: When viewing a product in your shopping cart, just select the one or three years of additional coverage in the dropdown menu under “Warranty Options.” For details, contact Customer Service at 724-746-5500.

* Warranty subject to certain exclusions and limitations ** Certain products may not be eligible.

What’s more, we also have a 45-day return policy. Simply call Customer Service for a Return Authorization (RA) number, return your product in new condition and in the original package, and receive a full refund.