The recommended replacement is the Gefen EXT-DVI-441N.
The Gefen EXT-HDTV-441N is a 4x1 HDTV Switcher which offers flexibility in
the setup of high definition theater and electronics systems. A plug and play
solution, the 4x1 HDTV Switcher connects four DVI source devices, such as
DVI-based computer systems, and links them to one DVI display. You select what
source will be viewed on the display using the IR remote control or the optional
wired remote control (sold separately). It can also be controlled using any universal programmable
remote device, offering an alternative to multiple remote control confusion.
This 4 port HDTV switch requires no additional power supply to operate. However,
it is equipped with a 5-volt DC input in the event that the unit requires
additional power, as in the case of a DVI source not outputting the proper
amount of voltage.

Gefen 4x1 HDTV Switch Backside
How the Gefen 4x1 HDTV switch works:
Connect your DVI display to the Switcher's display output. Then, using the
four high quality DVI cables that come with the 4x1 HDTV Switcher, plug each one
into the four DVI source devices, then connect them to the Switcher's inputs.
Once the source devices and the display are powered on and connected, you simply
switch between source devices using the RMT-4IR remote control or your own
universal remote.
Gefen EXT-HDTV-441N Features:
- Switch easily between any four DVI sources
- Extends the range of HDTV devices by equalizing and reclocking the HDTV
signal
- Maintains high resolution video - HDTV resolutions up to 1080p, 2k, and
computer resolutions up to 1920x1200 are easily achieved
- Discrete IR remote (included)
- Serial RS-232 remote port
- HDCP pass-through
Gefen EXT-HDTV-441N Package Includes:
- 4x1 HDTV Switcher
- RMT-4IR remote control
- 5V DC power supply
- (4) 6 foot DVI cables
Gefen EXT-HDTV-441N Specifications:
| Mechanical |
|
| Height |
1.375 in. (3.492 cm.) |
| Width |
11.125 in. (28.257 cm.) |
| Depth |
3.125 in. (7.937 cm.) |
| Weight |
6 lbs. (3 kg.) |
| Power |
|
| Supply |
5V DC |
| Consumption |
15 watts (max) |
| Input Signal |
|
| Video |
1.2 volts p-p |
| DDC |
5 volts p-p (TTL) |
| Video Amplifier Bandwidth |
1.65 Gbps |
| Single Link Range |
1080p/1920 x 1200 |
| DVI Connector |
DVI-I 29 pin female (digital
only) |