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Black Box

Black Box USB-to-USB Isolator - 4-kV, 1-Port

$181.22
$166.76 SAVE $14.46
6 availableas of 09/19/2026

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Should arrive by Thu, Oct 1 with free ground shipping

Compliance, certifications and origin

  • WEEE
  • RoHS
  • Origin: United States
Rated excellent by our customers Read our reviews

Secure checkoutISO 9001:2015 and CMMC certifiedFamily owned since 1982

Free shipping on most items when you spend $100 or more.

Real people answer: chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.

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Secure checkoutISO 9001:2015 and CMMC certifiedFamily owned since 1982

Free shipping on most items when you spend $100 or more.

Real people answer: chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.

Overview

Protect sensitive USB devices and connected equipment from damaging electrical surges, voltage spikes, and ground loops with this compact USB isolator. Providing up to 4 kV of isolation, it is ideal for medical, industrial, laboratory, and measurement applications where electrical noise and interference can compromise performance and data accuracy.

By breaking ground loops and reducing electrical noise, the isolator helps improve signal integrity, enhance measurement reliability, and prevent costly equipment damage. USB 1.1 compliance ensures broad compatibility with a wide range of USB devices and systems.

Installation is quick and simple, just connect the isolator between your computer and USB device. A 1-meter (3.3-ft.) USB cable is included for added convenience, making it easy to deploy protection wherever it is needed.

Technical specifications

General Information

Manufacturer Black Box Corporation
Manufacturer Part Number SP387A
Manufacturer Website Address http://www.blackbox.com
Brand Name Black Box
Product Model SP387A
Product Name USB-to-USB Isolator - 4-kV, 1-Port
Product Condition New
Packaged Quantity 1 Pack
Product Type Surge Suppressor/Protector

Technical Information

Receptacles 1 x USB

Physical Characteristics

Power Cord / Cable Length 3.3 ft
Height 1.7"
Width 2"
Depth 0.8"
Weight (Approximate) 6 oz

Miscellaneous

Package Contents
  • USB-to-USB Isolator - 4-kV, 1-Port
  • 1-meter (3.3-ft.) USB Cable
Green Compliant Yes
Country of Origin United States
Environmental Compliance Waste Electrical and Electronic Equipment Directive (WEEE)Restriction of Hazardous Substances (RoHS)

Warranty

Limited Warranty 5 Year

Ratings and reviews

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Shipping and returns

Free shipping on most items when you spend $100 or more. In-stock items ship on the next open shipment slot. The buy box above shows the live order-by countdown and the estimated arrival date.

Need to send it back? Start a return online with a Request RMA and our team will take care of you. Keep the original packaging. Items must be returned in the condition received.

Questions about shipping or returns? Chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.