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Installs in your desktop’s pre-cut grommet to safeguard your computer, scanner and other electronics against surges, spikes and line noise, as well as charge mobile devices, including smartphones, tablets and MP3 players.

  • Pushes down flush with desktop surface when not in use
  • 3 NEMA 5-15R outlets, 2 USB charging ports and RJ45 port
  • 900 joules of surge suppression
  • Designed for installation in 63.5 mm grommet
  • 10 ft. power cord reaches distant AC outlets


The TLP310DMUSB Protect It!® 3-Outlet Surge Protector features three NEMA 5-15R outlets and a surge suppression rating of 900 joules to protect your components against surges, spikes and EMI/RFI line noise that can damage sensitive electronics and destroy data. Plus, two USB ports produce 2.4A of combined power to charge your mobile devices, such as smartphones, tablets and MP3 players. An RJ45 port provides protection for your 10/100 Mbps Ethernet data connection.

Recommended for home or office workstations, the TLP310DMUSB is designed for installation in your desktop's 2.5-inch (63 millimeters) grommet hole (if your desk has no pre-cut hole, you can drill one yourself). It folds onto the desktop for connection of equipment. An LED indicates surge suppression at a glance. A resettable 15A circuit breaker shuts down equipment in case of an overload.

When not in use, straighten the TLP310DMUSB to a vertical position and push it down into the grommet until it's flush with the desk surface. The 10-foot (3.1-meter) power cord is long enough to reach distant AC outlets. Permanent mounting to the desk helps deter theft.


Powers and Protects Electronic Components

  • 3 NEMA 5-15R outlets accept most computers and peripherals
  • 900 joules of surge suppression protect against surges, spikes and EMI/RFI line noise
  • Easy-to-read LED indicates surge suppression at a glance
  • Resettable 15A circuit breaker protects against overloads
  • Recommended for home or office workstations

Powers and Charges Mobile Devices

  • 2 USB ports (2.4A total) charge smartphones, tablets and other devices
  • RJ45 jack protects 10/100 Ethernet data connection

Mounts Safely in Desktop's Grommet Hole

  • Designed for installation in 63.5 mm grommet
  • Folds onto desktop for connecting equipment
  • Pushes into the grommet hole flush with desktop when not in use
  • 10 ft. power cord stores away out of sight under the desk
  • Permanent mounting helps deter theft

$20,000 Ultimate Lifetime Insurance

  • We will repair or replace any connected equipment damaged by surges up to $20,000 for life
  • Valid in the U.S., Canada and Puerto Rico only

Package Includes

  • TLP310DMUSB Protect It! 3-Outlet Desktop-Grommet Surge Protector
  • Mounting clips
  • Owner’s manual
RoHS compliant


UPC Code037332199645
Product TypeSurge Protector
Charging Form FactorStrip
Device CompatibilityPhone; Tablet; Amazon Kindle
Nominal Input Voltage(s) Supported120V AC
Recommended Electrical Service120V
Input Cord Length DetailsStrip
Input Cord Gauge (AWG)14
Voltage Compatibility (VAC)120
Input Plug TypeNEMA 5-15P
Input Cord DetailsSJT
Input Cord Length (ft.)10
Right-Angle PlugNo
Output Receptacles(3) 5-15R
Circuit Breaker (amps)15
Diagnostic LED(s)Yes
Number of Charging Ports2
Total Charging Watts12
Charging MethodUSB
Charging Port TypeUSB A (FEMALE)
Charging Ports / Amps(2) 2.4A
Overcharge ProtectionNo
AC Suppression Joule Rating  900
AC Suppression Response Time  < 1 ns
Protection ModesIncludes full normal mode (H-N) and common mode (N-G / H-G) line suppression
UL1449 Let Through Rating500,500,500
EMI / RFI Filtering  Yes
ImmunityConforms to IEE 587/ANSI C62.41
Automatic Shut-Off  Yes
Network (Ethernet) ProtectionYes
Material of ConstructionPlastic
Power Cord ColorBlack
Mounting Holes or SlotsNo
Receptacle ColorBlack
Shipping Dimensions (hwd / in.)3.00 x 14.40 x 5.10
Shipping Weight (lbs.)2.70
Unit Dimensions (hwd / in.)11.020 x 2.860 x 2.470
Unit Weight (lbs.)2.21
Network Compatibility100 Mbps (Fast Ethernet)
Product CertificationsUL 1449; UL 962A
Product ComplianceRoHS
Product Warranty Period (Worldwide)Lifetime limited warranty
Connected Equipment Insurance (U.S., Canada & Puerto Rico)$20,000 Ultimate Lifetime Insurance 

Questions & Answers

When a surge protector has been compromised (due to a single event like a lightning strike or over a series of spikes and surges), many surge protectors will use an audible or LED alert only. If these alerts are missed, your equipment will receive unprotected power without your knowledge. When a surge protector with automatic shutoff has its protection compromised, it will prevent power from reaching connected equipment entirely. This both protects the equipment and provides a timely and clear indicator that a new surge protector is needed.
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