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1 Port Usb To Usb Isolator (4Kv)
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Limited Warranty period (parts): 1 year
- Limited Warranty period (labor): 1 year
- Read full details
Return Policies
- Return for refund until: January 31, 2027
- Return for replacement until: January 31, 2027
- This item is covered by Newegg.com's Extended Holiday Return Policy.
- Read full return policy for details.
We want to ensure your holiday shopping this year is hassle-free. That’s why we’re automatically extending our return policies on almost every product! For purchases placed between November 1st, 2026 and December 31, 2026 you will have until January 31, 2027 to return your product.
Manufacturer Contact Info
- Manufacturer Product Page
- Manufacturer Website
- Support Phone: 1-877-877-2269
- Support Website
- View other products from Black Box Corporation
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The Black Box SP387A is a one-port USB isolator that provides up to 4 kV of electrical isolation, making it suitable for users who need to help protect a PC and a connected USB device from electrical disturbances or ground loops.
Recommended For
- Lab and measurement users connecting a low-power USB instrument to a computer may find it useful when electrical noise or a ground loop is disrupting readings; Black Box positions the isolator for measurement applications.
- Industrial users connecting a low-speed, low-power USB peripheral may want inline isolation to help reduce ground-loop, surge, or electrical-noise problems in equipment setups.
- Users troubleshooting hum or interference in a USB-connected audio setup may consider it when the connected device works at full-speed USB and draws little power; USB isolation is commonly used to address ground-loop noise, but device compatibility matters.
- Users isolating a single basic USB peripheral, such as a keyboard or mouse, may suit this one-port design if the device can operate within its 12 Mbps data-rate and 100 mA downstream-power limits.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | USB connections that need electrical isolation |