Adder View AVSD 1004 Secure 4 port KVM switch DVI - USB

The AdderView AVSD1004 Secure enables a DVI monitor, USB keyboard and mouse to be shared between high and low security systems, sometimes known as red and black networks, and is designed carefully to prevent information flowing between computers or to the outside world via emissions snooping.

The AdderView Secure design prevents sensitive data from leaking between ports, sensitive data leaking to the outside world and sensitive data from being stored in the device. Furthermore, the switch actively combat a range of potential leakage “threats”

Uni-directional data paths for keyboard and mouse One-way data paths ensure that data isolation does not rely on trusting microprocessor software, but is instead assured by hardware and prevents a hidden software weaknesses that could potentially cause data leakage. A unidirectional structure also protects against timing analysis or forced malfunction attacks and prevents computers influencing the operation of any common circuitry.

Minimal emissions profile The AdderView Secure is heavily shielded with double shielding in critical areas to minimise the risk of eavesdropping equipment being able to pick up signals from the equipment.

No shared RAM between ports The keyboard and mouse processor is powered down and reset at each switchover to thwart shared RAM leakages. Separate memories hold the num, caps and scroll states and are only accessible when the relevant channel is selected. All data buffers are actively cleared once they have been used.

One time programmable microprocessors Microprocessors are one time programmable and don’t contain reprogrammable flash memory. This protects against sensitive data being stored within the device and protects the software against being corrupted.

60dB crosstalk isolation High crosstalk isolation ensures that less than 1/1000th of any signal from one computer is presented to the input of another computer due to electrical crosstalk.

Restricted USB function The USB ports will only support keyboards and mice and other devices, such as USB storage drives, are actively prohibited

No microphone connections To prevent small levels of crosstalk noise from being “recorded”, microphone connections are banned from the design.

Independent power supplies block power line signalling The circuitry for each port is independently powered from the USB lead. Power line signaling is therefore blocked because different port circuits don’t share the same power feed.