Is the NEC M431 good for a bright store window?

Yes. The 500 cd/m² brightness and high-haze panel are designed for high ambient light, so content stays readable where a typical TV would wash out.

Can it run in portrait orientation?

Yes. It supports vertical and horizontal orientation, and the 300 x 300 mm VESA pattern fits standard wall and floor mounts.

Not built in. It works with the optional NEC MediaPlayer, otherwise you supply a PC or external player over HDMI.

Yes. SNMP support and the built-in scheduler let IT staff monitor status and set on/off schedules across a fleet.

No. At 60Hz with a 5 ms response and no tuner or smart apps, it is a signage monitor rather than an entertainment display.

The display itself. A cable lock, mount and media player are sold separately, so plan for those accessories.

5 stores we checked sell it, including Technology Galaxy, BlueDogInk, Full Compass Systems, Avendor, AVLgear.com.

At BlueDogInk, for $970.54, as of our latest check.

$970.54at BlueDogInkChecked 15 h ago

Compared across 5 stores. Prices are checked against each store and labelled with when.