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Kramer Electronics RTBUS-11 Round Table Mount Multi-Connection — main product image
Kramer Electronics RTBUS-11 Round Table Mount Multi-Connection
Kramer Electronics RTBUS-11 Round Table Mount Multi-Connection
Kramer Electronics RTBUS-11 Round Table Mount Multi-Connection
Kramer Electronics

Kramer Electronics RTBUS-11 Round Table Mount Multi-Connection

★★★★★5.0 (2 reviews)

A flush-mount AV hub that puts HDMI, VGA, audio, and Ethernet right where presenters need them — inside the table.

$231.44*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Kramer RTBUS-11 solves a simple but persistent problem: getting AV connections from a presenter's laptop to the room's display system without cables snaking across the table. It mounts flush into a round cutout in conference tables, podiums, or lecterns, presenting HDMI, VGA, 3.5mm audio, and Ethernet ports right at the surface. Walk in, plug in, present. No adapter hunting, no crawling under furniture.

The unit itself is a passive connection hub — signals pass straight through without processing, conversion, or power requirements. That simplicity is its greatest strength: there are no drivers to install, no firmware to update, and nothing to fail electronically. The round, low-profile design blends into professional furniture without drawing attention. Installation does require a permanent cutout in the mounting surface and thoughtful cable routing underneath, so it's best suited for dedicated meeting spaces where the investment in clean infrastructure pays off daily.

Key Features

Supports HDMI, VGA, audio, and Ethernet connections

Suitable for boardrooms, conference, and training rooms

Unobtrusive in-table design

Specifications

Brand
Kramer Electronics
Model
RTBUS-11
Mounting Type
Round table mount (flush)
HDMI
Yes
VGA
Yes
Audio
1/8" (3.5mm) stereo
Ethernet
Yes
Signal Type
Passive pass-through
Intended Use
Boardrooms, conference rooms, training rooms, podiums

Pros & Cons

👍 Pros

  • Consolidates HDMI, VGA, audio, and Ethernet into a single clean table-mount point
  • Round flush design looks professional and unobtrusive in boardroom furniture
  • Passive pass-through means no power supply needed and nothing to configure
  • Compatible with both legacy VGA laptops and modern HDMI devices

👎 Cons

  • Requires cutting a hole in the table, making installation permanent and difficult to reposition
  • Does not include any built-in signal switching or conversion between inputs
  • Cable management beneath the table surface needs careful planning to avoid a tangled mess
  • VGA inclusion may become redundant as organizations fully transition to HDMI and USB-C

Frequently Asked Questions

It includes HDMI, VGA, a 1/8-inch (3.5mm) stereo audio jack, and an Ethernet port. That combination covers most laptop and presentation device outputs you'll encounter in a typical conference room.
The RTBUS-11 uses a round cutout designed for standard furniture-mount installation. Check Kramer's spec sheet for the exact diameter, as the unit needs to sit flush with the table surface for a clean look.
The RTBUS-11 is a passive connection hub — it routes signals from the table surface to your room's AV system underneath. It does not process or convert signals, so no external power supply is needed.
Yes. The round form factor and flush-mount design work well in podiums, lecterns, and custom furniture. The key requirement is sufficient depth beneath the mounting surface for cable routing.
The RTBUS-11 is a passive pass-through, so it supports whatever resolution the connected HDMI cable and source device can deliver. Verify the HDMI version in Kramer's specifications if 4K at a specific refresh rate is critical for your setup.

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