Please allow ~4-6 weeks to dispatch from Australia for quality control. Only 4 devices per customer may be shipped each day, so orders placed for more than 4 devices will be shipped over multiple days.
Products containing Lithium-Ion batteries (laptops and smartphones) are subject to extra safety requirements and are experiencing further delays.
If you are ordering a device that does not include a Windows 11 licence as standard, please check Microsoft's minimum system requirements to confirm if it can be upgraded later should you wish to do so.
Product images are for illustrative purposes only and may contain AI-generated content. They do not represent the exact product that is subject to the cosmetic grading policy detailed here.
ATEN CS1822 2-Port USB 3.0 4K HDMI KVMP Switch with Audio Mixer Mode
The ATEN CS1822 is a professional-grade 2-port USB 3.0 4K HDMI KVMP Switch featuring 4K resolution support up to 4096 × 2160 @ 60Hz, integrated audio mixer mode, superfast 5 Gbps USB 3.1 Gen 1 connectivity, and a compact metal housing weighing 740 grams, designed to streamline multi-computer management from a single console.
Streamline Your Workspace
Manage multiple computers effortlessly with this versatile KVM switch, eliminating the need for separate keyboards, mice, monitors, and audio systems. Ideal for creative professionals, IT administrators, financial traders, and power users who require seamless control over dual workstations without workspace clutter.
Key Features and Benefits
- 4K Resolution Support: Delivers crystal-clear visuals at 4096 × 2160 @ 60Hz (4K DCI) and 3840 × 2160 @ 60Hz (4K UHD), with additional support for 2560 × 1440 @ 144Hz for high-refresh gaming and professional workflows
- Audio Mixer Mode: Intelligently blends audio from both connected computers simultaneously, ensuring you never miss notifications or alerts from either system
- USB 3.1 Gen 1 Hub: Built-in 2-port USB hub with 5 Gbps SuperSpeed data transfer for connecting peripherals without occupying additional desk space
- Video DynaSync™ Technology: ATEN's proprietary technology eliminates boot-up display problems and optimises resolution automatically when switching between sources
- Flexible Control Options: Select computers via hotkey, front-panel pushbuttons, mouse emulation, or RS-232 commands for maximum convenience
- Independent Switching: Toggle between KVM, USB peripherals, and audio focus independently, giving you complete control over which input receives attention
- Professional-Grade Construction: Metal and plastic housing ensures durability in demanding office environments
Essential Technical Specifications
- Computer Connections: 2 ports
- Video Specifications: 4K UHD @ 60Hz, HDMI 2.0 compliant, HDCP support, HD audio compatibility
- USB Connectivity: 2 × USB 3.1 Gen 1 Type B (computer), 2 × USB 3.1 Gen 1 Type A hub, 5 Gbps data transfer
- Audio Ports: 2 × 3.5mm stereo jacks (front and rear)
- Console Connections: 1 × HDMI female, 2 × USB Type A female ports
- Serial Interface: 1 × RJ-11 female port
- Dimensions: 210 × 88 × 55.5 mm (compact desktop form factor)
- Weight: 740 grams
- Power Consumption: 5V DC, 1.78W (extremely energy efficient)
- Operating Temperature Range: 0–40°C
Quality Assurance and Testing
Every ATEN CS1822 unit sold by Reboot IT has undergone comprehensive testing of all features and functions to ensure optimal performance. As an industry expert since 2001, Reboot IT utilises cutting-edge testing software and thorough verification processes to guarantee that all certified refurbished units meet exacting standards. Each device is carefully inspected and tested before dispatch, ensuring immediate functionality and reliability.
Warranty and Support
This certified refurbished ATEN CS1822 is backed by a comprehensive 1-year warranty, providing peace of mind and protection for your investment. Reboot IT's commitment to quality means you're receiving a thoroughly tested and verified device that performs as good as new.
About Reboot IT
For over two decades, Reboot IT has been an established authority in the refurbished IT equipment industry, specialising in rigorous testing, certification, and restoration of professional-grade infrastructure hardware. Our reputation is built on transparency, quality assurance, and customer satisfaction.
Call to Action
Upgrade your multi-computer workflow with this professional ATEN KVM switch. Order your certified refurbished ATEN CS1822 today and experience seamless desktop management with full 1-year warranty protection.
| Manufacturer Warranty | 3 Months |
| Item Height | None |
| Network Connectivity | Wired-Ethernet (RJ-45) |
| Item Width | None |
| Condition | A |
| Ethernet Technology | Gigabit Ethernet (1000-Mbit/s) |
| Model | ATEN CAT 5 HIGH-DENSITY KVM OVER IP SWITCH |
| Layer | None |
| Type | Data Transfer Switch |
| Network Management Type | Data Transfer Switch |
| Processor Model | none |
| Number Of Wan Ports | None |
| Connector Type | Data Transfer Switch |
| Raid Levels | None |
| Brand | Aten |
| Form Factor | Rack Mountable |
| Number Of Lan Ports | 48 |
| Maximum Lan Data Rate | 1000 Mbps/1 Gbps |
| Maximum Data Transfer Rate | 1 Gbps |
| Custom Bundle | No |
| Network Type | Data Transfer Switch |
| Supported Wireless Protocols | None |
| Device Connectivity | None |
| Interface | Ethernet (RJ-45) |
| Item Length | None |
| Product Line | none |
| Bundle Description | None |
Refurbished Computers - Cosmetic Grading Guide
Our supplier's refurbished hardware is typically graded either "Excellent" or "Good", however, some legacy products were graded under a letter grading system (A, B, C). Please find the definitions for each grade below and contact us if you're uncertain of a device's grade.
Used Smartphone / Refurbished Mobile Phones
"Excellent" Grade
Devices in this category appear like new, with very minor wear. Expect light or fine scratches on the screen that are shallow enough not to catch on a fingernail. The edge around the glass is virtually flawless, save for possible light scratching around the power port. The back plate may show light/fine scratches, including on the Apple logo, with any discoloration being minimal.
"Good" Grade
These devices are characterized by being fully tested and functional even if they have body scratches, minor paint chips, or a small hairline crack on the screen. Screens are free from dead pixels but may exhibit slight scratching from moderate use.
Refurbished Desktops, Laptops and Monitors
"Excellent" Grade - Laptops
Reserved for units that show barely any signs of previous use, these laptops may exhibit very minor scuffing or abrasions, associated only with minimal standard use. The keyboards show light wear, and importantly, the screens are pristine, free from any scratches, cracks, chips, dead pixels, dark spots, discoloration, or blemishes.
"Excellent" Grade - Desktops
Desktop PCs in the "Excellent" grade category are free from deep scratches, cracks, paint chips, or any broken/missing pieces, ensuring a sleek and almost-new aesthetic.
"Excellent" Grade - Monitors
"Excellent" grade is reserved for units that show evidence of very little to no previous use. Any wear on an "Excellent" Display, including housing/frame and/or external surfaces (i.e. Frame) is associated with standard minimal use. "Excellent" units may have minor scuffing and / or minor abrasions on plastics with from standard light previous use."Excellent" Displays will feature no scratches, cracks, chips, dead pixels, dark spots, discoloration or blemishes. Units will only feature the standard minimal wear and tear that is associated with a used unit.
"Good" Grade - Laptops
"Good" laptops may feature one or several small dings or dents on covers and / or small paint chips on the surface or small hairline cracks in the bezel. Laptop screens may feature uneven light diffusion in screen and may feature subtle blemishes. "Good" Laptops will not feature cracks screens but may feature slight scratching, dead pixels or white spots on the screen.
"Good" Grade - Desktops
"Good" grade desktops may have light scratches on external body and may feature more excessive unit housing and/or external case wear than "Excellent" units, including wear on case / lid. "Good" PCs may feature one or several small dings or dents on covers and / or small paint chips on the surface.
"Good" Grade - Monitors
Displays in the "Good" grade have been fully tested and are functional but may include scratches on body, small paint chips, minor cracks on body, loose and/or wobbly bases. "Good" Display screens may feature uneven light diffusion in screen and may feature subtle to moderate blemishes. "Good" Displays will not feature cracks on screens but may feature slight scratching on screen surfaces from moderate use or wear, dead pixels or white spots on the screen.
Legacy letter grading
Used Smartphone / Refurbished Mobile Phones
A Grade
- No chips, scratches or cracks on the front glass and housing
- No missing or alternative parts
- No sign of liquid damage
- Battery cannot be swollen
B Grade – Same as A Grade except:
- May have light scuffs but no chips or cracks
- Light scratches on housing or front glass
C-Grade – Same as B Grade except:
- Unlimited long shallow scratches on the front glass
- No chips or cracks on the front glass
- Unlimited scratches, chips/dents on back cover housing and corners
- Minor cracks allowed
- Customized housing and aftermarket covers allowed
Refurbished Desktops, Laptops and Monitors
A-Grade
- Overall excellent to very good cosmetic condition. Some may be pristine, others may have light scratches or minor blemishes
- Laptops may have some shiny areas around the keyboard such as the space bar, touchpad or touchpad buttons
- Keyboard keys will be in excellent condition
- Laptop and monitor screens will be blemish free
- Cosmetic blemishes will not impact the overall functionality or performance of the device
B-Grade
- Will have some cosmetic blemishes that include scratches and/or other imperfections
- Minor scratches and dents on the housing
- Laptops may have shiny keys or shiny surfaces around the keyboard however all characters will be legible
- Laptop and monitors screens will have imperfections such as minor scratches, minor chips and/or white spots. There will be no cracking on the screen
- Have the same warranty as A Grade
- Pricing will be cheaper than A Grade
C-Grade
- Same as B-Grade except may have unlimited scratches/blemishes on the screen
- May have cracks/chips or dents on the housing
- Have the same warranty as A Grade
- Pricing will be cheaper than B Grade
