Avocent SwitchView SC340 1x4 Secure KVM



Replaced by: Avocent Cybex SC845
Alternative options: Contact Us

Ports: 4 Port
Video Output: Single Monitor
Features: Audio + USB CAC

The Avocent SwitchView™ SC340 secure KVM switch offers proven, secure access for any environment where security is mandatory and expanded USB support is required. The SC340 is NIAP validated to EAL4+ and allows for multiple levels of physical security and CAC capability, enabling you to consolidate multiple workstations of varying security classification levels with one keyboard, monitor and mouse without compromising network security.

The SwitchView™ SC300 series of secure switches includes tamper-proof hardware security at the desktop and discrete processing paths, as well as separate processors for each channel to prevent data transfer between attached devices. In addition, the SC 300 series switch allows a full range of USB peripherals to accommodate any environment.

Avocent SwitchView SC340-001 Secure KVM Switch Back View
Avocent SwitchView SC340 Secure KVM Switch Back View

Common CriteriaAvocent SC340-001 Features & Benefits:

  • NIAP Common Criteria validated to EAL4+
  • Multiple layers of security
    • U.S. custom-designed and loaded firmware
    • Tamper-evident tape: A visual indication of an attempt to gain access to the internal components of the switch
    • Smart Card/CAC Card reader support
    • Locked memory: Prevents tampering and reprogramming of the firmware
  • Secure channels: Four secure channels, each with its own unique processing data path
  • Clears buffer: Automatically clears the keyboard buffer immediately after data is transmitted through the switch, so no data is ever left in the switch
  • Superior User Experience: Industry leading technology provides for seamless switching between channels

Avocent SC340-001 Specifications:

Height 2.3 in. (5.8 cm.)
Width 10.3 in. (26.2 cm.)
Depth7.0 in. (17.8 cm.)
Weight 3.4 lbs. (1.5 kg.)
Operating Temperature32° to 104°F (0° to 40°C)
Storage Temperature-4° to 122°F (-20° to 50°C)
Operating Voltage100 - 240 VAC
Power Frequency50/60 Hz
Typical Power Consumption5.5W@(120V), 5.7W@(240V)
Maximum Power Consumption17.6W@(120V), 17.7W@(240V)
Device Support 
ComputersUSB and single-head DVI-I
VideoSingle Head, Dual-link DVI-I, VGA (with adapter) maximum resolution 2560x1600 @ 60Hz
PeripheralsUSB keyboard, USB mouse as well as enhanced USB support for devices such as CAC readers and interactive whiteboards
Approved Agency CE, UL 60950-1, CSA C22.2 No 60950-1, EN60950, FCC Part 15 Class B EN55022 Class B, EN55024 61000-3-3, VCCI Class B, C-Tick CISPR22, ICES-003
WarrantyThree Years
UPC / EAN Barcode icon
UPC 636430062556
EAN 0636430062556
Question: What is your channel to channel crosstalk (in dB) isolation ?
Answer: Thank you for your inquiry. According to the manufacturer, Avocent, the channel to channel crosstalk is around 30db, which is typical for products in this class that have no additional separation built in. The SC300 series happens to be a family of secure KVMs that Avocent did not build in the 60db separation feature.

The SC620, 640,680, 740 and 780 all have 60db separation.

Question: Will this KVM work well with a USB hub? I'd like to connect it to a single USB extension cable going to a hub, which has both my keyboard and mouse.
Answer: Thank you for your inquiry. Unfortunately, due the way in which a KVM communicates with the mouse and keyboard, that type of functionality is not supported by the manufacturer. This will be the case for KVMs in general, especially switches in the secure KVM category.

That being said, there is a decent probability that it would work, especially when considering top tier manufacturers like Avocent. Please note, however, if it does work, there may be some loss in functionality; and since it is a non-supported application/environment, we could not in any way guarantee it.

Question: What is the output from this receiver unit?
Answer: Thank you for your inquiry. This particular product is a secure KVM switch with 4 ports - KVM standing for keyboard, video, mouse.

It is used to access 4 attached target computers/servers with one keyboard, mouse and DVI video user station. So, in that sense, it will take the input from a keyboard and mouse and send it to one of the target devices, while receiving the video output from the same target device to display on the attached monitor. A user can select which target computer is in use via a push button.

Question: i have 3 computers hooked through a SC340 switch. Does the keyboard and mouse need to be present for the computer to boot up properly? When the IT folks do a push and it reboots system I'm getting no response from keyboard or mouse if it's not selected.
Answer: Thank you for your inquiry. Unfortunately, detailed product support is beyond this simple FAQ. Having said that, we have not encountered this type of issue with the Avocent SwitchView secure KVM line. According to the manual, the start up procedure should be attaching the keyboard and mouse to the switch/servers, powering up the KVM then powering up the servers. There is no mention of needing to have each server selected as active before boot up.

A good place to start for detailed Avocent support is the Avocent support community located here: http://community.emerson.com/networkpower/support/avocent/.

Question: Any chance there's embedded hotkey switching with this unit?
Answer: Thank you for your inquiry,

Common Criteria certified "Secure" KVM Switches, like this Avocent SC340, unfortunately cannot support hot key switching by design; Hot key requires buffering of the keyboard signals which is not allowed according to the Common Criteria security specification.

For a similar KVM that is not Common Criteria Certified and would support hot key switching, you may be interested in the Adder AV4PRO-DVI instead.

Please let us know if there is anything else we can help you with!

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