Although it's USB powered, a drawback of the monitor is that it requires two USB outputs from your laptop or desktop, so it's impossible to hook this up to the Surface Pro unless it's docked. UPDATE: This is not true, as I discovered below. See update for 6/13/14.
Your Windows pc won't immediately recognize the monitor. You'll need to install a setup program that's stored on the monitor's built-in U disk. This is an interesting way to install drivers, but since the product was released in 2013, the files are hopelessly dated.
Through no help from the flimsy instructions included with the device, I learned that the LT1423p requires the latest DisplayLink drivers and Wacom's Tablet PC feeldrivers.
It took some doing to get it all working correctly. I'm sure some of this is due to the fact that I only had touch enabled devices available to test the monitor. This naturally causes confusion with the pen driver.
The DisplayLink also doesn't seem to assume that you'll leave the monitor attached in a desktop configuration. This is obviously meant to be a portable device. As such, the monitor is often not recognized upon startup. Once the pc is powered on, plugging in the two USB cables initializes the driver.
A DisplayLink applet is available in the system tray to set resolution, orientation and power both the monitor and laptop display on and off.
Drawing on the LT1423p is silky smooth. The included Lenovo stylus is terrible as usual, but any Tablet PC pen is compatible. For the image drawn above, I used the Fujitsu T5000 pen. Unlike the Thinkpad Yoga, the ThinkVision doesn't have a screen coating, which I much prefer.
The LT1423p only has 256 levels of pressure, but I didn't notice much of a difference from my other Wacom equipped devices. The drawing experience is as good as any Tablet PC I've ever tested.
UPDATE: When I first posted this earlier today, I neglected to mention calibration and digitizer accuracy. Once the driver understood which pen display was which, default settings worked reasonably well. Like most Wacom devices, the digitizer's accuracy tends to drift toward the edges. Having used the N-Trig on the Surface Pro 3 so frequently for the past couple of weeks, I'm struck by the difference in accuracy. It's easy to get back into the rhythm of making sure to align the cursor and not necessarily the pen tip, but it definitely requires adjustment when you switch back and forth between the two technologies.
Although I was worried by its relatively low resolution and 18-bit color depth, viewing angles are excellent and I think the image quality will satisfy all but the most demanding of users.
The monitor is only .26 inches thick, .5 with stand. This thing is light too, weighing 1.87 lbs with stand. It's the perfect companion to throw into a bag alongside your Ultrabook. (I of course tried to test this with a Macbook Pro, but while it works as a second monitor, the digitizer is hopelessly out of alignment and I couldn't find a Mac equivalent to Wacom's Tablet PC drivers to correct the issue).
The monitor features a built-in stand that extends to a 12-degree angle. Lenovo calls this typing mode. The ingenious cover stand offers nine other angles ranging from 28- to 70-degrees.
For its price, I simply can't recommend the Lenovo ThinkVision LT1423p highly enough. Unfortunately, the Lenovo site says the device has a five week shipping time. I hope this is due to high demand or ongoing hardware improvements and not a sign that they've given up on the concept.