Video Conferencing & Meeting Rooms
The Wireless Presentation Trap: Why HDMI Cables Still Refuse to Die
HDMI cables survive because they need no network, no pairing, no app and no firmware updates. Anyone can walk into a room, plug in and present. Wireless presentation systems have improved a lot. Barco's next-generation ClickShare Button supports Wi-Fi 6E, 4K at 30 frames per second and WPA3. But wireless adds things a cable doesn't have: a dependency on the network, software on the presenter's device, extra firmware to patch and occasional delay. The trap is assuming a room has to be one or the other. The most reliable meeting rooms keep a cable, or a single USB-C connection, as a fallback beside the wireless system.
How do cable and wireless options compare?
| Method | Strength | Weakness |
|---|---|---|
| HDMI cable | No pairing, no network, works with almost any laptop | Cable wear, adapter dongles, limited length |
| HDBaseT extender | About 100 m over one Cat cable; can carry USB, Ethernet and power | Needs a transmitter and receiver, and installation |
| Single USB-C cable | Video, USB peripherals and charging in one cable | The laptop's port must support video (DisplayPort Alt Mode) |
| ClickShare Button | 4K at 30 fps, Wi-Fi 6E, WPA3; no Wi-Fi setup for the user | Firmware vulnerabilities to patch; latency not published |
| AirPlay to ClickShare CSE-200 | Native on Macs and iPhones | Barco capped it at 720p because of growing delay |
| Miracast on Teams Rooms | Built into Windows-based Teams Rooms | Not available on Android-based Teams Rooms |
Source: Barco next-gen ClickShare Button spec sheet (updated 24 Nov 2025) and Barco knowledge-base article KB12499; Belden, "HDBaseT common questions answered"; Microsoft Learn, Teams devices feature comparison (13 Oct 2026). No source we found publishes measured latency figures for these systems, so we don't quote any.
Our earlier guide, wireless presentation systems: convenience or another IT headache?, compares wireless presentation products. This post argues the other side: why the cable still deserves a place in the room.
Why do HDMI cables refuse to die?
Zero training. A visitor doesn't need to download an app, join a guest network or find a button. They plug in and it works. In client-facing rooms, that matters more than convenience for regular staff.
No network dependency. Wireless sharing travels over Wi-Fi or the office network. AirPlay and Google Cast need the right network services passing between the presenter's device and the receiver, which IT has to configure when guests and staff are on separate networks. If the network has a problem, a cable still works.
Fewer things to patch. A wireless presentation base unit is a networked computer. Barco has published a fix for a firmware flaw that let an administrator, or someone with physical access, run commands on several ClickShare models. It released hotfix firmware 2.21.1, and Barco's security team said it wasn't aware of any malicious use. A separate public record, CVE-2026-100902, describes a wallpaper-upload flaw in ClickShare CX-20 Gen 2 firmware up to 02.26.00.0007, rated CVSS 6.5. None of this makes wireless unsafe, but it is one more device that needs updating. A cable has no firmware.
Video playback. Protected video, using HDCP copy protection, is designed to travel over a cable such as HDMI. Screen-mirroring apps can show a black window instead of protected content. Barco also reports that AirPlay sharing to its CSE-200 base unit showed "an increasing amount of delay", so it capped AirPlay at 720p in later firmware. For a smooth video clip, a cable is the safer bet.
Wireless is the convenience. The cable is the backup that still works when everything else in the room doesn't.
Where does wireless genuinely win?
Wireless is the better primary method in rooms where people present one after another, in rooms where cables are often damaged or taken, and in rooms where laptops with different ports would otherwise need a bag of adapters. Button-based systems such as ClickShare avoid most Wi-Fi setup for the user: plug in the button, press it, and the screen appears. Systems like the ClickShare CX range also do wireless conferencing, turning the room's camera and speakerphone into the laptop's devices.
On Windows-based Teams Rooms, Miracast lets a Windows laptop share to the room without extra hardware, according to Microsoft's feature comparison. Android-based Teams Rooms don't offer it. So the room platform you choose also affects which wireless options you get for free and which need a separate system.
The question isn't which technology is better. It's what should happen when the primary method fails five minutes before a board presentation.
What does a hybrid room look like?
- Wireless as the everyday method: a ClickShare, Yealink or similar system for quick sharing and BYOD conferencing.
- A cable at the table: an HDMI cable, or a USB-C connection, into a switch that selects whichever source is active.
- HDBaseT for distance: when the display is far from the table, an HDBaseT extender carries HDMI about 100 m over one network cable, and can carry USB and power too.
- A known-good adapter kit: a USB-C to HDMI adapter tied to the table for laptops without HDMI.
- EDID handling: an EDID emulator stops laptops from losing the picture or changing resolution when switches or extenders are added.
A single USB-C cable can carry video, USB and charging together, which gets close to the "one cable" ideal. We explain why that is still harder than it sounds in the one-cable meeting room dream, and which cable type to use in HDMI vs DisplayPort vs USB-C. If the room also needs a dedicated video system, see Microsoft Teams Rooms vs BYOD.
Buying in Singapore
For wireless sharing, SourceIT lists the Barco ClickShare C-5 Gen 2 at S$1,193.40, the ClickShare C-10 Gen 2 with one button at S$1,860.30, the Yealink WPP30 pod at S$515 and the ClickShare HDMI-IN to USB-C kit at S$182.52 for HDMI-only sources. For the cable side, there is the ATEN VC1280 auto-switch at S$256.52, the ATEN VE811 HDBaseT extender at S$537.80, the ATEN USB-C to 4K HDMI adapter at S$77, the ATEN VC081A EDID emulator at S$110 and the ATEN 1.8 m Ultra High Speed HDMI cable at S$27 (all listed 8 Nov 2026, including GST). Crestron AirMedia systems such as the AM-3200 are price on request. Browse Barco ClickShare. Prices change; ask for a current quotation. Use Request for Quotation on the product page, call (65) 6978 3502, email Sales@sourceit.com.sg or use our contact page.
Frequently asked questions
Is wireless presentation reliable enough to remove HDMI cables? For many rooms it's reliable enough to be the main method, but we suggest keeping a cable or USB-C fallback. Wireless depends on the network, software on the presenter's device and the base unit's firmware. A cable depends on none of them.
What resolution does ClickShare support? Barco's next-generation ClickShare Button supports up to 3840 × 2160 at 30 fps over Wi-Fi 6E, with a maximum distance of 30 m to the base unit. Barco limited AirPlay sharing on its CSE-200 base unit to 720p because of delay.
Are wireless presentation systems a security risk? They are networked devices, so they need firmware updates like any other. Barco has issued hotfix firmware for a flaw that required admin or physical access, and said it wasn't aware of malicious use. Keep units patched and on an appropriate network segment.
How far can HDMI run in a meeting room? A passive cable's reliable reach depends on resolution and cable quality, and it gets shorter at 4K. For longer runs, an HDBaseT extender carries HDMI about 100 m over a single network cable, and can also carry USB, Ethernet and power.
Can a room have both wireless and HDMI? Yes, and that's often the best design. An auto-switch selects whichever source is active, so the wireless system handles everyday sharing while a table cable or USB-C connection is there for guests, video playback or a failed wireless session.
