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Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)

FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746

Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018

Web site: www.blackbox.com   •   E-mail: [email protected]

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February 2010 

MT1000A-85-R4

Protect expensive USB devices from noise, surges 

and spikes.

These small, affordable in-line isolators 
eliminate ground loops, too.

One-Port USB to USB Isolators

SP386A

SP387A

Protect expensive PCs and equipment from damaging electrical 
storms, power surges, and other high EMI/RFI disturbances. 
This heavy-duty line of isolators packs a powerful punch 
against electrical noises, surges and spikes, and it eliminates 
ground loops, which are disruptive in measurement 
applications.

Both isolators are USB bus powered and provide up to  
100 mA of current to attached downstream devices. They 
comply with the USB 1.1 standard and transfer data at  
12 Mbps. 

Standard USB cables of up to 5 meters may be used on either 
side of the products.

Product Overview

•   SP387A is certified up to 4kV isolation, 8kV contact, 15kV 

air ESD.

•   SP386A provides 2-kV triple isolation for safeguarding data 

and equipment in heavy industrial settings. 

•  Both of these high retention USB connectors feature an 

ultra-compact in-line design.

•   Powered from the USB bus; no drivers are required. 

•   Designed to withstand both shock and vibration.

•   Data rates up to 12 Mbps.

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