What it is for
Rated for 24/7 use, so one line serves both meeting rooms and signage. Used in Control room (backstage AV) · Welcome lounge.
- Wired network control (MDC), SNMP and Samsung VXT for fleet management, so every display can be seen and turned on or off remotely.
- Three HDMI inputs and CEC, so a video bar can wake it and choose its input.
Installed by year
Ports
12 portsHDMI33 in3.5 mm31 in, 2 outUSB-A2Not stated22 inDisplayPort11 inRJ451
Rear
VideoUSBNetworkOtherAudioPower
Every port, in detail
| # | Port | Connector | Carries | Direction | Where |
|---|---|---|---|---|---|
| 1 | hdmi-in-1HDMI 2.0, HDCP 2.2. | HDMI | video, audio | In | Rear |
| 2 | hdmi-in-2HDMI 2.0, HDCP 2.2. | HDMI | video, audio | In | Rear |
| 3 | hdmi-in-3HDMI 2.0, HDCP 2.2, with audio return channel. | HDMI | video, audio | In | Rear |
| 4 | displayport-in-1DisplayPort 1.2. | DisplayPort | video, audio | In | Rear |
| 5 | usb-a-1USB 2.0, 0.5 A. | USB-A | USB, power | Both ways | Rear |
| 6 | usb-a-2USB 2.0, 1.0 A. | USB-A | USB, power | Both ways | Rear |
| 7 | lan-110/100 Mb/s. Used for MDC control, SNMP and fleet management. | RJ45 | ethernet | Both ways | Rear |
| 8 | serial-13.5 mm stereo jack, not DB9; the RS232C adapter in the box converts it to DB9. 9600 bps, 8N1. | 3.5 mm | rs232 | In | Rear |
| 9 | serial-23.5 mm stereo jack, for daisy chaining MDC to another display. | 3.5 mm | rs232 | Out | Rear |
| 10 | ir-in-1For the external IR receiver cable; drawn as a round mini jack, size not stated. | Not stated | ir | In | Rear |
| 11 | audio-out-1 | 3.5 mm | audio | Out | Rear |
| 12 | power-inInternal power supply, 100 to 240 V AC. The inlet type is not stated. | Not stated | power | In | Rear |
Security support
Demo values- Firmware line
- Samsung Tizen for signage
- Security updates
- Until Dec 2028 Demo value
- Report a flaw
- security.samsungtv.com
The manufacturer sets these dates; Keia Atlas tracks them and does not vouch for them. A warning shows from 12 months before support ends.
Spaces using it
2 spacesSpace types that use it
2 units in 2 spaces at 1 officeNotes
- VESA 400 x 300 mm, M8 screws, 12 to 14 mm deep.
- 500 nits typical, 4,000:1, 25 percent haze, VA panel, 8 ms.
- Tizen 7.0, quad-core 1.7 GHz, 16 GB storage (about 10 GB free), Wi-Fi 5 and Bluetooth 5.0, 2 x 10 W speakers.
- Operating conditions 0 to 40 degrees C, 10 to 80 percent humidity.
- Optional stand STN-L6585C and slim wall mount WMN-B50SC; neither is in the box.
- Samsung says the sister QBC line is meant for under 16 hours a day; the QMC is rated 24/7, which is why it is the house line.
What the manufacturer doesn't say
- The power inlet type (C14 or C8) is not stated in any source read.
- The manual draws the ports as one strip on the rear but does not say whether they face down or sideways, or give their order along the strip, so no order is recorded.
- The IR jack size is not stated.
- The manual gives no factory defaults for the settings the configuration uses.
Sources
- Crystal UHD Signage QMC 65 inch (LH65QMCEBGCXEN) - Samsung UK Business
Size, weight, VESA, power supply, panel, ports and 24/7 rating (spec table) - Crystal UHD Signage QBC, QHC, QMC leaflet (Samsung Germany)
Typical and maximum power, ports and panel figures, read separately to check the product page - User Manual QBC, QHC, QMC series (BN81-24537A-12, 18 Sept 2026)
Rear panel ports, their labels and RS232C wiring - EU product information sheet LH65QMCEBGCXEN
On-mode and standby power - Quick Setup Guide QMC (BN68-16544A-01)
What is in the box, EMC class B - 65 and 85 inch QMC Series Commercial Display - Samsung US Business
US part number - Samsung unveils QxC series at InfoComm 2023 (Samsung US Newsroom, 13 June 2023)
Announcement date and Tizen 7.0
Each model was read twice, independently, and the two readings reconciled against the manufacturer's text.