iiyama LH4375UHS-B2AG 43-inch 4K commercial display

It fits a reception, a canteen, a retail aisle, a waiting room, a departmental notice point or a lectern position where a 4K screen runs all day and people read it from a few metres. It is a commercial signage display rated for continuous operation, not a television, and it is aimed at sites that want the option of running their own compute inside the chassis.

It is a standard slot for a plug-in compute module that sits inside the display and is powered by it. Fit one and the screen runs whatever that module runs, typically Windows, so the content platform is yours rather than the display maker's. Practically it removes the media player box, its power supply and its cable from behind the screen, which matters on a flush wall mount or in a public space. The module itself is bought separately and does not come with the display.

This 43-inch model takes the small format, Intel SDM-S. The 50-inch and larger displays in the same range take the larger SDM-L format. The two are different physical standards, so a module bought for one will not fit the other. Tell us the size you are ordering and we will match the module to it.

No. Android 11 is built in with iiSignage2 content management, iiControl, iiShare, EShare wireless sharing and FailOver input recovery, running on 4GB of memory and 32GB of storage with a micro SD card slot for local media. Three HDMI 2.0 inputs and a DisplayPort 1.2 input are there if you would rather drive it from a player, a PC or a compute module instead.

Because signage screens often end up as the one display in the room. Three HDMI 2.0 inputs plus DisplayPort 1.2 let a lectern laptop, a room PC and a player all stay connected without a switcher, and FailOver moves to the next live input on its own if a source drops. Audio return channel is on the third HDMI if you are feeding sound back to a soundbar or an amplifier.

No. At 500 cd/m2 this is the standard indoor signage level, right for a foyer, a corridor, a canteen or a retail interior. A glazed shop front or any position where sunlight falls on the glass needs the high-brightness tier, which is roughly 800 cd/m2 and upwards. Measure the light at the position before you commit, because a washed-out screen in a window is an expensive mistake.

Yes. iiyama rates it for 24/7 non-stop operation, it is fanless so it adds no noise in a quiet reception, and anti image retention is built in for content with fixed elements such as a logo or a header bar. The quoted MTBF figure is 50,000 hours excluding the backlight, and the operating temperature range is 0 to 40 degrees C.

Yes. iiyama lists landscape and portrait orientation for this model, so it works as a tall wayfinding or directory panel as well as a wide menu board. Set the orientation in the display settings and lay the content out to match before the screen goes on the wall, and check that the chosen bracket supports the rotated position.

It measures 968 x 557 x 54mm and weighs 8.9kg, 12.5kg in its box, so one person can handle it onto a standard flat wall mount. The mounting pattern is listed in the specification table on this page. Leave the rear connections reachable, since the HDMI, DisplayPort, network and control ports all sit behind the panel, and allow for the module bay if you are fitting compute inside the chassis.

Reading distance decides it first, but the panels genuinely differ. The 43-inch uses an IPS panel rated 1200:1, which holds colour from an angle and suits a screen people pass at an angle in a corridor or above a desk. The 50-inch uses a VA panel rated 5000:1, so blacks are deeper in a dim foyer or an evening retail space, at the cost of some angle. Both are 4K at 500 cd/m2 with 2 x 10W speakers, three HDMI inputs, Android 11 and 24/7 operation; the 50-inch weighs 11.8kg against 8.9kg, draws 112W against 101W, and takes the larger SDM-L module rather than SDM-S.