Kramer |SKU: EXT3UKIT

Kramer EXT3-U-KIT USB 2.0 PoC Extender Up to 330 Feet with Audio RS-232 Support

$615.00
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Ships in 3-4 Days

Product highlights

  • USB 2.0 Extension Up to 330 Feet Over Cat 6a or 98 Feet Over Cat 5e
  • Stereo Audio Extension
  • Support for Keyboards, Mice, Printers, Scanners, Cameras, Touchscreens, Smartboards, Smartphones, Tablets
  • Remote USB Charging via Power Supply or Transmitter
  • Bidirectional RS-232 Serial Communication
  • Plug-and-Play Installation
  • Single Twisted Pair Cable for Power and Signal
  • LED Status Indicators

In the box

  • Kramer EXT3-U-KIT USB 2.0 PoC Extender Up to 330 Feet with Audio RS-232 Support
  • Transmitter
  • Receiver
  • USB-A to USB-B Cable (6.6 Feet)
  • 12V Power Supply

Free standard shipping

*Orders placed before 1 PM EST Mon - Thur will ship the same day. Orders placed beyond these hours will be shipped the next business day. Exclusions apply. See shipping policy

Free Local Pickup

Please call for store stock availability. Requests made before 2:30 PM EST can be available for next-day pickup. Learn more

Questions? We’re Here to Help

Call or email one of our experts.

Extend USB 2.0, RS-232, and audio signals up to 330 feet with the Kramer EXT3-U-KIT. Designed for meeting rooms, classrooms, and corporate environments, this all-in-one kit includes a transmitter and receiver that convert USB and audio signals over a single Cat 6a cable for seamless connectivity and power. Connect up to four USB peripherals: keyboards, mice, headphones, or smartphones, and enjoy smooth, plug-and-play performance without complicated setup.

USB 2.0 and Audio Extension:

Transmit USB and stereo audio signals up to 330 feet over Cat 6a or 98 feet over Cat 5e.

Wide Device Compatibility:

Supports cameras, touchscreens, smartboards, hard drives, game controllers, printers, scanners, mice, keyboards, smartphones, and tablets.

Remote USB Charging:

Charge connected devices via USB fast charge when using the included power supply, or standard USB charging via the transmitter.

Bidirectional RS-232 Support:

Enables two-way serial communication for data transmission and device control.

Plug-and-Play Installation:

Compact, fanless design mounts easily, with a single twisted pair cable for both power and signal. Onboard LED indicators simplify troubleshooting and maintenance.

Shipping & Returns

  • Same Day Shipping


    All orders placed by 1PM( EST), Monday through Thursday, and by 11AM (EST) on Friday, are shipped same day. Orders placed outside these times will ship the next business day. We do not ship internationally or to Puerto Rico, Guam and other US territories at this time. For more details click here.

  • Free Standard Shipping


    We offer free standard shipping on thousands of items within the continental USA (this does not include Alaska and Hawaii).



  • Easy returns


    If you're not happy with your purchase for any reason, our flexible 30-day free return policy makes it easy to get a full refund. Click here to view our return policy.


Frequently Asked Questions

How do I return an item?

Returns are incredibly simple. Please log into your account, find your item you wish to return and follow the prompts to make a return. If you do not have an account, click here to find your order and make a return.

Will I receive a full refund when I return an item?

You will receive a full refund when you return an item in its original manufacturer’s packaging, undamaged and unmarked. If the item you are returning is priced at less than $35, you will be charged a 15% restocking fee. Please note you will not be refunded any shipping charges.

How many days do I have to make a return?

You have 30 days to make a return. During the holiday season, from November 1 to December 31, we extend the return window to 60 days. 

My item was damaged in transit. How do I place a return?

If your order has been noticeably damaged in transit, we strongly recommend that you refuse delivery and notify us immediately. Claims for missing items or items damaged in transit must be made within 48 hours of delivery. If there is carrier damage, please contact support@focuscamera.com with your order number and a description of the damage. 

There’s an issue with my order, what should I do?

Oh no! Please contact our customer service team so we can resolve the issue immediately. You can call us on 1.800.221.0828, email us at support@focuscamera.com, or send us a message here.

Can I exchange an item?

We do not currently offer exchanges. Please return the item you purchased within 30 days and order what you’d like instead.

If I ordered a kit, do I have to return all the items?

If you ordered a kit, you must return all components and accessories to receive a full refund.

I ordered a product that included a free item. I’d like to return it, do I need to return the free item as well?

If you ordered a product that included a free item, you must include the free item with your return. If not, your return will not be accepted and you will not receive a full refund.

Do you offer repairs?

We currently only offer camera repairs at our Brooklyn store. The item must be dropped off and collected in person as we do not accept shipped items for repair. For more information, please call our Brooklyn store on 1.718.431.7900.

What is your return policy?

Most items can be returned within 30 days for a full refund. Click here to read our full return policy. 

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