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I'm using this docking station's two DisplayPorts to drive two 4K monitors (
Seiki SE39UY04 39-Inch 4K Ultra HD 120Hz LED TV (Discontinued)
) from the humble Intel 4400 graphics chipset of a
EliteBook 850G1 15.6" LED Intel Core i7 2.1GHz 16GB SDRAM 256GB SATA SED Windows 7 Professional 64-bit
. Each monitor's HDMI cable connects to the dock through a
Plugable Active DisplayPort to HDMI Adapter (Supports displays up to 4K / UHD / 3840x2160@30Hz)
. The monitors defaulted to a refresh rate of 29 Hz. They're rated for 30 Hz, and if I wish, I can select 30 Hz from Windows 7 Enterprise's dropdown list. But I no reason to push my luck.
My employer provided the dock at work. But I liked it so much, I've bought one to use at home on snow days.
The dock includes an HP 65W power supply brick, which was implied but wasn't specifically stated in the product listing. I use this dock with a work-issued Elitebook G3 850, and have no issues to report so far. I am using audio-out, Ethernet, one USB3, and one DisplayPort. I was unable to locate any firmware update for it on the HP site, although that could be due to my company's firewall. Note that the included power brick has a much larger barrel connector than the one for the Elitebook G3 notebook, so they are not interchangeable. Unlike most inexpensive power bricks, this power brick hides a third connector sense line inside what looks like a normal barrel connector.
I took off one star because the docking is a two step process (impale the laptop on the guide pins, then slide the docking lever sideways) which is not as intuitive as previous HP docks where you simply impaled the laptop on the pins and everything worked. I shudder to think of the day when I forget to un-slide the docking lever and try to lift the laptop off the dock. Due to the slimness, all the various connectors are right down at the surface of the desk, not a huge issue for me but if you have older cables with thick connector plugs, it could put stress on the sockets. Otherwise, a nice fit and finish, with all the utility you'd expect for a dock of this price point.
As a docking station this works quite well and I have no complaints. I am here to comment on something I ran across that took me a couple of months to figure out. I use a KVM switch
ATEN 2-Port USB 2.0 DVI KVMP Switch with Cables CS1762A (Silver)
to switch between my work laptop and my home desktop. My KVM switch is DVI based. With my previous docking station/laptop this worked fine because everything supported DVI. With the new docking station I only had DP++ available so I figured no big deal, just get a DP to DVI adapter. First I tried an active adapter
Cable Matters Gold Plated DisplayPort to DVI Male to Female Adapter
, but got this constant irregular noise from the docking station whenever I was displaying the laptop on my monitor. Then I tried a passive adapter
StarTech.com DisplayPort To DVI Adapter - Passive - 1080p -DP to DVI - Display Port to DVI-D Adapter
with the same results. I tried a different docking station thinking it might be defective, no change. Since everything but my KVM switch supported DisplayPort I finally tried a KVM switch based on native DisplayPort
Avocent 2-Port DisplayPort 4K Ultra HD KVM Switch (SV220D)
. Eureka, noise is gone, I can work in peace. I could find no others experience with this sound, so I thought I'd share my experience.