Description
The SK41D-4TR is a secure, rugged 4-port HDMI / DVI-D KVM switch engineered for classified and austere environments. It provides isolation and hardware-based switching to protect signals against TEMPEST emissions while enabling operators to share a single console across multiple hosts. The unit is built to meet military environmental standards for vehicle, marine, and airborne installations.
Key features include NIAP PP4.0 certification for peripheral sharing devices and TEMPEST Level A compliance – rare in a single product. The switch supports HDMI up to 4K@30Hz or 2600×1600@60Hz and DVI-D up to 1920×1200@60Hz, plus two USB 2.0 channels for keyboard and pointing devices. Front-panel IP67 push buttons, NVG-compatible illumination and an optional remote control console provide flexible operator control.
Technical performance is hardened to MIL-STD-810G for vibration, humidity, altitude, sand and salt fog and includes an immersion rating to 3 meters freshwater. Power is nominal 28VDC with an operating range of 18V-36V and MIL-STD-1275E compatibility, with a maximum power draw of 40W. MTBF is rated at 65,000 hours at 40 degrees Celsius.
Connectivity uses circular D38999 military connectors for both host and console I/O – host: D38999/24WD35PN carrying 4x HDMI (DVI-D compatible) plus 2x USB 2.0; console: D38999/24WD35SN carrying console HDMI and 2x USB device connections. Optional composite or VGA host inputs and a remote WR40-4TR control are available. Video format support and connector pinouts are designed for secure, sealed installations.
The SK41D-4TR is intended for mission-critical applications where emissions security and environmental resilience are required. Typical deployments include command vehicles, naval combat information centers, airborne platforms and secure control rooms. The unit’s small form factor and rugged connectors simplify integration into existing racks and consoles while maintaining secure operations.
Installation and operation are straightforward with panel mount or rack options and IP67-rated front controls that are NVG-compatible. The enclosure and internal design follow MIL-HDBK-216 reliability practices and the device is BAA and TAA compliant. Firmware and maintenance access are controlled to preserve the NIAP PP4.0 security posture.
Overall, the SK41D-4TR delivers a combination of TEMPEST-level emissions protection, NIAP PP4.0 certification and rugged military-grade construction in a compact 4-port HDMI / DVI-D KVM switch. It is optimized for secure sharing of displays and USB peripherals where environmental hardening and classified data protection are mandatory. The design balances operator ergonomics, secure switching and field-proven durability.
Free Ground Shipping
We offer free ground shipping on every purchase of $300 and more for US and US territory. Please choose "Free Ground Shipping (UPS/USPS)" option at checkout.
UPS Ground
UPS provides up-to-date tracking information. Ground service takes anywhere from 2-7 working days for delivery depending on destinations. UPS Ground does not deliver on Saturdays, Sundays or Holidays.
USPS Priority Mail/USPS Express Mail
For all shipments shipped via USPS, we offer 'DELIVERY CONFIRMATION' number with each package. Difference between tracking number provided by UPS vs USPS Delivery Confirmation number is: Delivery Confirmation status is updated when the delivery has been made or when the package has made it through major USPS stations.
Air Shipment
Air shipments, Overnight, 2nd day and 3 day select methods offer guaranteed delivery time for your shipment. If you are in hurry or in need for the items on schedule, select one of these methods. Up-to-date tracking information is provided with each Air Shipment. AVProSupply has the right to choose between Air shipments to meet or reduce delivery time. For guaranteed delivery of multiple items with expedited shipping, please contact our customer service representative for personalized assistance to get your items delivered to you when you need them.
International Customers
We offer shipping via USPS/UPS for our international customers. You can find different shipping options during checkout.
Most items ordered from AVProSupply will be shipped out from our California Warehouse. Will-Calls are only allowed with Appointment Only - Please call Customer Service to set one up between the hours of 9am to 6pm PST.
We Offer A 30-Day Money Back Guarantee:
Our main goal is to ensure your complete satisfaction with our service and products. If, for any reason, you are not 100% satisfied with your purchase, you can return it within 30 days of the purchase date for a full refund. Our 30-day money back guarantee applies to all of the products we sell, except for: TVs and monitors 20" and larger, Special Order merchandise, or any item indicated as non-returnable. Shipping is not refundable. Prior to returning your purchase, a Return Merchandise Authorization (RMA) number will be provided to you.
Refunds:
Refunds on returned items will be issued in the same payment form as received from the customer at the time of purchase. Once we receive the product and it passes inspection, we will credit your account. Please allow 3 - 6 business days for a credit to appear on your account.
Exchanges:
If the item was sent back to us for an exchange, please allow 3 - 5 business days for the replacement to be processed.
No Returns/Exchanges on the following:
- TVs and monitors 20" and larger
- Special Order merchandise
- Any item indicated on the website as non-returnable
For more information see our official Return Policy
