What is the Kramer EXT3-C-XR-T USB-C HDBaseT transmitter?
The Kramer EXT3-C-XR-T is an extended-reach HDBaseT 3.0 transmitter with a USB-C input that carries 4K@60Hz 4:4:4 video, USB 2.0, Ethernet, RS-232 and IR over twisted pair for up to 100m (330ft). A presenter connects a laptop with one USB-C cable and the transmitter sends everything to a compatible receiver at the display or rack. It is a standalone alternative to a wall plate for BYOD conference rooms and hybrid classrooms.

How does the Kramer EXT3-C-XR-T work?
The EXT3-C-XR-T converts all of its input signals into a single HDBaseT 3.0 stream over copper CAT cable. Uncompressed 4K@60Hz 4:4:4 video with HDCP 2.3 is passed to the far end, along with multichannel audio and EDID handled by Kramer I-EDIDPro intelligent EDID processing.
USB 2.0 is extended between both ends, so the connected laptop can use a USB camera, speakerphone or HID device at the receiver side, the basic requirement for a BYOD hybrid meeting room. Ethernet, bidirectional RS-232 and IR are carried on the same cable for network access and device control.
The transmitter supplies up to 60W of USB-C charging from its 20V DC power adapter, and a display on/off control lets the presenter power the room display. LED indicators simplify local maintenance and troubleshooting.

What are the key features of the Kramer EXT3-C-XR-T?
- USB-C BYOD input — One cable carries laptop video, USB and charging.
- Uncompressed 4K@60Hz 4:4:4 — 18Gbps with HDCP 2.3 for current laptops and displays.
- Up to 100m reach — Extended-reach HDBaseT 3.0 over CAT copper cable.
- 60W USB-C charging — Keeps the presenter's laptop powered during the meeting.
- USB 2.0 extension — Reaches remote cameras, audio devices and HID peripherals.
- Ethernet, RS-232 and IR — Network and control signals share the same cable.
- I-EDIDPro — Kramer intelligent EDID processing for plug-and-play operation.
- Display power control — Turns the room display on and off from the transmitter.
Where is the Kramer EXT3-C-XR-T typically used?
- Conference room
- Boardroom
- Huddle room
- Training room
- Commercial meeting space
Technical Specifications
| Input | 1 USB-C |
| Extension | HDBaseT 3.0, up to 100m (330ft) |
| Max data rate | 18Gbps (6Gbps per graphic channel) |
| Max resolution | 4K@60Hz (4:4:4), 24bpp |
| Content protection | HDCP 2.3 |
| HDMI support | 4K as specified in HDMI 2.0b |
| Extended signals | USB 2.0, Ethernet, RS-232, IR |
| Power adapter | 20V DC, 6A; 88W max |
| USB-C charging | Up to 60W |
| Operating temperature | 0° to +40°C (32° to 104°F) |
| Weight | 0.6kg (1.2lbs) approx. |
Frequently Asked Questions
Which receiver works with the EXT3-C-XR-T?
Kramer pairs it with the EXT3-POE-XR-R HDBaseT 3.0 receiver for USB, Ethernet and control extension. It is a standard HDBaseT extender, so it also connects to HDBaseT-compliant receivers and switchers.
How is it different from the EXT3-C-WP-XR-T?
The EXT3-C-WP-XR-T is the wall plate version. Kramer lists the EXT3-C-XR-T as its direct replacement in a standalone enclosure.
Can it charge the laptop?
Yes, up to 60W over USB-C when powered by its adapter.
Can I use it for a USB conferencing camera?
Yes. USB 2.0 is extended to the far end so the laptop can use a room camera and audio device. Pair it with a camera such as the Kramer K-CAM4K PTZ camera.
What are the HDBaseT 2.0 alternatives?
The Kramer TP-580CT is a USB-C transmitter at 4K60 4:2:0, and the Kramer TP-590TXR adds USB over HDBaseT 2.0.
Does Creation Networks install these systems?
Yes. We design, install and support Kramer AV systems nationwide. Browse the Kramer collection or contact us for a quote.
At Creation Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.
- Most in-stock orders placed Monday-Friday ship within 24-48 hours. General restrictions apply; please see our full shipping policy here.
- We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.
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