General
BrandStartech
Item Height
5.7 centimetres
Item Width16 centimetres
Available Warranties for This Item
Product Specifications
Technical Details
- Front panel push-buttons and Hot-key functions for easy switching
- Supports resolutions up to 2048x1536 (Analog) and 1920x1200 (digital)
- USB 2.0 hub for peripheral sharing (Thumb drives, external hard drives, web cams, etc.)
Product details
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Product Description
Manufacturer's Description
The SV231DD2DUA 2-port Dual DVI USB KVM Switch allows two PCs, each with dual DVI video outputs, to share two monitors, one microphone and set of speakers, one keyboard and one mouse as well as two other USB peripherals.An ideal solution for graphic designers, CAD/CAM designers or educational and financial institutions, the dual view KVM Switch allows you to instantly switch back and forth between dual DVI display PCs at the touch of a button, while maintaining professional level video quality on both monitors. The dual DVI switch also features an integrated USB hub port that allows USB 2.0 peripherals such as thumb drives, external hard drives or web cams to be shared between attached systems - eliminating duplicate peripheral costs.While both DVI-I (analog mode) and DVI-D (digital only) are supported by the KVM, both source PCs should output the same signal type for proper switching. It is recommended wherever possible to use DVI-D cables across all PC to KVM and KVM to Console connections.
Product Description
Startech 2 PORT DUAL DVI USB KVM SWITCH WITH AUDIO USB 20 HUB SV231DD2DUA KVM Switches KVM Switches
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Customer Reviews
Most Helpful Customer Reviews
3 of 3 people found the following review helpful
First the plus points:-
A well made metal box that should last for years, justifying the not inconsiderable price.
Seems to switch USB Keyboard/Mouse reliably and pretty quickly, have not tried audio or other USB ports switching yet.
Display quality appears to be unaffected by the switch, although I only go up to 1280 x 1024 per screen.
With a switch from another manufacturer VGA was affected.
Then the negative:-
16 days after purchase it has failed, will not switch one of the display ports. Moving computers between ports leaves the problem on the same port, thereby proving not a GFX card or cable issue.
With Microsoft Windows 7 you may well have issues unless you can force the EDID used. Note that this is in general considered to be a Win 7 problem, not an issue with the KVM switch as such, given the number of scathing comments in various forums....
Basically until I started to force the EDID Win 7 decided that in fact there was only 1 screen and refused to use the other. Forcing EDID, using Nvidias control panel for example, is a workaround, OK if you never change screens. Having to force the EDID this way also suggests the selling point that the box 'remembers EDID' is a suspect claim, at least as far as Win 7 is concerned. WinXP worked fine.
Also when it was operational the box itself decides whether to switch a display or not, it does not obediently switch between the sources you select, so sometimes you will end up with displays from both computers.
So, the convenience of only pressing one switch to select between 2 (or 4 on the bigger model) computers is somewhat outweighed by the overall unreliability of the Win 7 experience.
UPDATE: Kudos to StarTech and the distributor, Whistler. Authorisation to return agreed quickly, item being collected for repair tomorrow. Having calmed down a little I have moderated the review in places.
UPDATE: Actually a replacement was not available, so I received a credit instead. Decided to get this item instead, Aten CS1642 2-Port USB 2.0 DVI Dual View KVMP Switch. This comes complete with cables, including audio and USB included. So far working fine, since 5th Oct.
A well made metal box that should last for years, justifying the not inconsiderable price.
Seems to switch USB Keyboard/Mouse reliably and pretty quickly, have not tried audio or other USB ports switching yet.
Display quality appears to be unaffected by the switch, although I only go up to 1280 x 1024 per screen.
With a switch from another manufacturer VGA was affected.
Then the negative:-
16 days after purchase it has failed, will not switch one of the display ports. Moving computers between ports leaves the problem on the same port, thereby proving not a GFX card or cable issue.
With Microsoft Windows 7 you may well have issues unless you can force the EDID used. Note that this is in general considered to be a Win 7 problem, not an issue with the KVM switch as such, given the number of scathing comments in various forums....
Basically until I started to force the EDID Win 7 decided that in fact there was only 1 screen and refused to use the other. Forcing EDID, using Nvidias control panel for example, is a workaround, OK if you never change screens. Having to force the EDID this way also suggests the selling point that the box 'remembers EDID' is a suspect claim, at least as far as Win 7 is concerned. WinXP worked fine.
Also when it was operational the box itself decides whether to switch a display or not, it does not obediently switch between the sources you select, so sometimes you will end up with displays from both computers.
So, the convenience of only pressing one switch to select between 2 (or 4 on the bigger model) computers is somewhat outweighed by the overall unreliability of the Win 7 experience.
UPDATE: Kudos to StarTech and the distributor, Whistler. Authorisation to return agreed quickly, item being collected for repair tomorrow. Having calmed down a little I have moderated the review in places.
UPDATE: Actually a replacement was not available, so I received a credit instead. Decided to get this item instead, Aten CS1642 2-Port USB 2.0 DVI Dual View KVMP Switch. This comes complete with cables, including audio and USB included. So far working fine, since 5th Oct.
Most Helpful Customer Reviews on Amazon.com (beta)
Amazon.com:
2 reviews
Good but possible audio issue
7 May 2012
Amazon Verified Purchase
I'm getting an audio hum off the 2nd computer audio input that I'm not sure is the switch or the audio cable. Since the cables are wired into a desk enclosure it's not easy to disassemble. If I have the opportunity to trouble-shoot I'll update the review. Overall I like the switch and it does what it promises.
7 of 11 people found the following review helpful
Useless for its intended purpose
15 Jun 2010
Amazon Verified Purchase
I purchased this KVM as it supposedly was one of the few that would work with a wireless keyboard/mouse (one that uses a USB "receiver") and I could find only positive comments across the web.
Unfortunately, BUYER BEWARE!
The only positive comment I could say about this product is that it arrived quickly. Too bad, though, as I wasted additional money and time to try and get it to work properly.
My setup:
DELL desktop with add-on high-end dual DVI graphics card.
Very high-end notebook with a high end DVI + HDMI dual monitor graphics card. (This required one HDMI to DVI-I cable)
Wireless mouse/keyboard combination using a single USB receiver.
Here is a partial list of the problems with this unit.
GENERAL ISSUES / FEATURE DEFICIENCIES
1. Difficult to work with, as the back panel connectors are very close together. Since DVI cables tend to be thick, it is extremely difficult to plug everything in and/or move connectors once you get cables in the right place.
2. Manual states that it is for the 2 and 4 port version, however only describes buttons and setup that is accurate for the 4 port version.
3. Front panel LEDs have no markings and are unintuitive as to what they mean.
4. No way to have the Audio stay with a particular PC - it always follows the selected computer.
5. All special functions (like turning scanning on/off) require keyboard sequences, which is useless if you have to put your keyboard USB receiver into the general USB ports (instead of the keyboard port) - which must be done if you want your keyboard driver to be able to integrate with the keyboard (or mouse) driver.
BUGS
1. The most fundamental KVM requirement is that the KVM must make the PC think that monitors are always attached. However, when I pressed the front panel switch to move "focus" to my laptop, my desktop computer thought its monitors were disconnected. This caused the desktop to automatically reconfigure its video to use one monitor, moving all my opened apps to a single screen. When I used the KVM to switch back to my desktop, I had to reset my graphics controller to dual monitor mode and move the apps back to where I wanted them.
2. Using the regular USB keyboard port, occasionally pressing a key auto-repeats a dozen or so of the same character.
3. Using the regular USB mouse port, occasionally the mouse stops working and requires the USB receiver to be removed and reinserted - which only works some of the time.
The manufacturer claimed that part of the problem was that I needed to use DVI-I cables instead of DVI-D cables (although digital monitors usually do not even allow DVI-I cables to plug into their DVI connector) and should not need the additional analog pins available on DVI-I cables. I purchased 4 high quality DVI-I cables to use to connect the unit to my PCs and tried again. However, it made ZERO difference and every problem still existed.
The bottom line is that this unit DOES NOT WORK properly!
Unfortunately, BUYER BEWARE!
The only positive comment I could say about this product is that it arrived quickly. Too bad, though, as I wasted additional money and time to try and get it to work properly.
My setup:
DELL desktop with add-on high-end dual DVI graphics card.
Very high-end notebook with a high end DVI + HDMI dual monitor graphics card. (This required one HDMI to DVI-I cable)
Wireless mouse/keyboard combination using a single USB receiver.
Here is a partial list of the problems with this unit.
GENERAL ISSUES / FEATURE DEFICIENCIES
1. Difficult to work with, as the back panel connectors are very close together. Since DVI cables tend to be thick, it is extremely difficult to plug everything in and/or move connectors once you get cables in the right place.
2. Manual states that it is for the 2 and 4 port version, however only describes buttons and setup that is accurate for the 4 port version.
3. Front panel LEDs have no markings and are unintuitive as to what they mean.
4. No way to have the Audio stay with a particular PC - it always follows the selected computer.
5. All special functions (like turning scanning on/off) require keyboard sequences, which is useless if you have to put your keyboard USB receiver into the general USB ports (instead of the keyboard port) - which must be done if you want your keyboard driver to be able to integrate with the keyboard (or mouse) driver.
BUGS
1. The most fundamental KVM requirement is that the KVM must make the PC think that monitors are always attached. However, when I pressed the front panel switch to move "focus" to my laptop, my desktop computer thought its monitors were disconnected. This caused the desktop to automatically reconfigure its video to use one monitor, moving all my opened apps to a single screen. When I used the KVM to switch back to my desktop, I had to reset my graphics controller to dual monitor mode and move the apps back to where I wanted them.
2. Using the regular USB keyboard port, occasionally pressing a key auto-repeats a dozen or so of the same character.
3. Using the regular USB mouse port, occasionally the mouse stops working and requires the USB receiver to be removed and reinserted - which only works some of the time.
The manufacturer claimed that part of the problem was that I needed to use DVI-I cables instead of DVI-D cables (although digital monitors usually do not even allow DVI-I cables to plug into their DVI connector) and should not need the additional analog pins available on DVI-I cables. I purchased 4 high quality DVI-I cables to use to connect the unit to my PCs and tried again. However, it made ZERO difference and every problem still existed.
The bottom line is that this unit DOES NOT WORK properly!
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