All posts by Bernie Thompson

Black Friday for your Multiple Monitor Setup

At Plugable, we price our products at a fixed, low margin that doesn’t usually leave room for Black Friday specials.

Because of lower costs, this year we have a pricing realignment of our DisplayLink-based USB Graphics Adapters that happened to come on Black Friday. We’re dropping prices on all our USB graphics adapters on Amazon.

We believe you won’t find a better combination of price and product. So go out and build that awesome multi-monitor Windows 7 or Windows 8 setup you’ve always wanted.

Here are the new prices for our complete line of USB 2.0 and USB 3.0 adapters, with a variety of display output types.

Plugable USB-VGA-165 USB to VGA Adapter for Multiple Displays up to 1920x1080 / 1600x1200 Each (DisplayLink DL-165 C... Product Details $39.95

Plugable UGA-165 USB 2.0 to VGA/DVI/HDMI Graphics Adapter for Windows, Multiple Monitors up to 1920x1080 / 1600x1200... Product Details $39.95

Plugable UGA-3000 USB 3.0 to VGA / DVI / HDMI Adapter for Windows - Multiple Monitors up to 2048x1152 / 1920x1080 Ea... Product Details $49.95

Plugable UGA-2K-A USB 2.0 to VGA/DVI/HDMI Adapter for Windows, Multiple Monitors up to 2048x1152 / 1920x1080 Each (D... Product Details $54.95

Plugable USB 3.0 to HDMI / DVI Adapter for Windows, Multiple Monitors up to 2048x1152 / 1920x1200 Each (DisplayLink ... Product Details $56.00

Plugable USB 3.0 Dual-Head Graphics (DVI / VGA plus HDMI) and Gigabit Ethernet Adapter (DL3900 chipset) for Windows ... Product Details $64.00

And here’s us showing what’s possible with these products

Have any questions? Feel free to comment below or email support@plugable.com anytime.

Thanks for going out of your way for Plugable products!

DisplayLink Releases Version 2.1 Driver for Mac OS X

There have been many multi-monitor regressions from OS X 10.8.5 to 10.9, and USB graphics has been significantly impacted.

Part of the confusion is not knowing which new problems are fixable by DisplayLink and which ones will require waiting for the next point releases by Apple.

We have a clearer picture of that now with DisplayLink’s version 2.1 driver final release. A number of things are greatly improved, including a fix for the new performance problems on 10.9 — performance is now back up to 10.8.5 levels.

However, we’re still recommending that anyone on 10.8.5 with a multiple-monitor setup, stay there until Apple has a chance to get out some point releases. In particular, multi-monitor setups of many types are losing configuration, often on sleep. And virtual graphics drivers like DisplayLink aren’t working for 2 or more displays. Both of these problems are new for 10.9.

See the comments on our original 10.9 multi-mon post for different problems reported by customers with DisplayLink and non-DisplayLink hardware. DisplayLink lists the 10.9 issues they’re aware of in the DisplayLink KB article for OS X 10.9.

So, progress .. but for most 3+ monitor users, 10.9 is still not workable. So we can’t recommend any of our Plugable brand products with DisplayLink for Mac, unfortunately. We’ll update as Apple and DisplayLink put out additional point releases.

Feel free to post your experiences in the comments below — it helps everyone to have the behaviors be known. Thanks!

Before You Upgrade To Mac OS X 10.9 (“Mavericks”)

Good news: Mac OS X 10.9 is available today and for the first time, it’s a free update, so app and hardware developers will be able to start counting on Mac hardware running the latest software in general (kinda like the iOS world).

Bad News: Mac OS X versions have historically broken some percentage of 3rd party hardware, and OS X 10.9 appears to have a particularly big impact. Many hardware devices will need updated drivers for 10.9, either because the older drivers simply don’t work at all, or because they work but with new problems.

If you can, it may be better to wait for the adventurous to forge ahead and report their findings on 10.9, before taking the upgrade.

DisplayLink Based USB Products

Users with DisplayLink-based USB Docking Stations and Graphics Adapters should avoid updating to 10.9, if at all possible. See here for details.

DisplayLink-based USB devices that work well on 10.8.5 (up to 4 additional USB displays) will be broken for most uses by the 10.9 update. In particular, 2+ USB displays or any HDMI-attached displays (even non-DisplayLink) don’t work reliably because of screen configuration issues.

We don’t know when this is going to be fixed — but evidence is it will require fixes both from Apple and DisplayLink, so that will take a significant amount of time.

If you are able to stay on 10.8.5, or if you only need a single USB attached DVI/VGA monitor on 10.9, use
DisplayLink’s latest 2.1 Beta drivers.

USB Network Adapters


Mac OS X 10.9 (and 10.8.5) includes support for both the AX88772 chipset and the AX88178 chipsets in our USB 2.0 USB Ethernet adapters, and UD-160-A docking station. For these chips, we recommend first uninstalling any ASIX drivers and repairing disk permissions before upgrade to 10.9 (relying on your built-in net connection), and just plugging in to use the Apple drivers after upgrade.


For our USB 3.0 Gigabit Ethernet adapter, an updated ASIX driver is required. In addition to Mavericks support, compatibility issues with Android File Transfer seem to be resolved. That said, we’re seeing reports of some new problems with 10.9 and would recommend caution. For those who have already updated to 10.9, the compatible driver is available at:
the latest ASIX driver version to get 10.9 compatibility. Note that this driver does not yet have the new 10.9 signature, so you’ll also need to click ok on installing the driver unsigned.

USB Serial Adapter

The latest driver version is required to work with 10.9.

Plugable USB to RS-232 DB9 Serial Adapter

Serial devices will be automatically created (“ls /dev | grep serial”" to see them), however the network control panel in 10.9 now no longer shows serial devices as connected, even when they’re in use.

Other Devices

For all of our other devices, we’re recommending in-box drivers, or they don’t require 3rd party driver installs (hubs, cables, etc).

If you have a question about a product we didn’t mention, please feel free to comment below. We’ll get it added.

And if you hit any 10.9 upgrade problems with Plugable products, we’ll work to help. Just email support@plugable.com anytime.

Thanks!