ATEN 8-PORT Vga/audio Switch Dedicated Switch - VS0801A

ATEN VS0801A 8-Port VGA/Audio Switch

Overview

The ATEN VS0801A is an 8-input VGA video and audio switch designed for rack-mounted AV distribution environments where a single display or projector must be shared across multiple VGA sources — training rooms, command centers, and legacy analog AV infrastructure still running VGA signal paths. The VS0801A routes one active VGA source at a time to the output display and passes stereo audio in parallel, eliminating the need for separate audio switching hardware. With a DB-9 RS-232 serial port and a dedicated RS-232 control tool (Windows), it integrates into automation systems and room control processors that expect serial command control — useful when front-panel access isn't practical and a touchscreen or AMX/Crestron controller is driving the switching. Browse the full ATEN switching and connectivity line for related matrix switches and extenders.

Key Features

• 8 VGA Inputs, 1 Output: Selects from up to eight VGA sources and routes the active signal to a single display — eliminates monitor crowding and manual cable swaps at the display end. For installations with more simultaneous outputs needed, consider a matrix switch variant in the ATEN family.
• 75Ω Impedance-Matched Signal Path: The 75Ω impedance matches the VGA cable standard, which preserves signal integrity and minimizes reflections that would show up as ghosting or soft edges on the display — relevant when source cables are long or of uneven quality.
• Stereo Audio Switching via Mini Stereo Jack: A single 3.5mm mini stereo jack female (green, standard consumer/pro audio color coding) carries the switched audio output alongside the video. No separate audio switcher or break-out box needed — the audio follows the video source automatically, keeping your rack wiring simple.
• RS-232 Serial Control (DB-9 Female): The DB-9 RS-232 port at 19200 baud, 8 data bits, 1 stop bit, no parity, no flow control gives room controllers a clean serial channel. If your control system speaks RS-232 (most AMX, Crestron, and Extron processors do), you can script source switching without touching the front panel. ATEN's Windows RS-232 Control Tool (v1.0.063) lets you validate commands from a laptop during commissioning.
• 1.8m Maximum Cable Distance: The VS0801A is designed for source-to-switch runs up to 1.8m — this is a local switching application, not a distribution extender. Source devices need to be in the same rack or immediately adjacent equipment cabinet. If sources are farther away, pair this switch with VGA extenders upstream.
• Rack-Mount Form Factor: The rack-mount chassis fits into a standard 19-inch equipment rack, keeping the switch alongside amplifiers, signal processors, and display controllers rather than sitting loose on a shelf. Note ATEN's dimension convention for some rack products: physical WxDxH is expressed as LxWxH in documentation — verify orientation before cutting rack space.
• Firmware Field-Upgradeable to v1.1.103: The current firmware release (v1.1.103, March 2021) is available for Windows-based field upgrade — you can apply fixes or protocol updates without returning the unit, which matters in deployed AV racks where downtime is disruptive.
• DC Power Input: Powered by a single DC jack, keeping the power supply external and replaceable without touching the switch chassis. If the OEM supply fails in the field, a compatible DC adapter at the right voltage keeps the installation running.

Integration and Compatibility

The VS0801A is a legacy-format KVM and video switch built for VGA-based analog signal environments. It does not carry HDMI, DisplayPort, or digital video signals — if your sources have moved to digital outputs, this switch requires active VGA adapters upstream or is not the right fit. The RS-232 control interface at 19200 baud is compatible with most commercial room control systems; verify your controller's serial port settings match the fixed 8N1 protocol before wiring. The unit does not pass USB or keyboard/mouse signals — it is a pure video and audio switch, not a KVM. For environments that need USB peripheral sharing alongside video, look at ATEN's KVM switch families. For ATEN video switching in digital AV environments, the VS line includes HDMI matrix options that may better match current source inventories.

Frequently Asked Questions

Q: Does the VS0801A support HDMI or DisplayPort inputs?

A: No. The VS0801A is a VGA-only switch. All eight inputs and the single output carry analog VGA video signals. If your sources output HDMI or DisplayPort, you would need active digital-to-VGA adapters at each source — or consider a different switch platform designed for digital video.

Q: What RS-232 settings does the VS0801A use for serial control?

A: The VS0801A RS-232 port (DB-9 female) operates at 19200 baud, 8 data bits, 1 stop bit, no parity, and no flow control. These settings are fixed. Match them on your control processor before sending commands.

Q: Can I upgrade the VS0801A firmware in the field?

A: Yes. ATEN provides a Windows-based firmware upgrade utility. The current release is v1.1.103 (released March 2021), available from the ATEN support site. Upgrades are performed via the Windows upgrade tool — no serial or IP-based in-band upgrade path is documented in the evidence.

Q: What is the maximum cable run from a VGA source to the VS0801A?

A: The VS0801A specifies a maximum distance of 1.8m. This is a local switching device, not a distribution amplifier or extender. Sources must be co-located in the same rack or immediately adjacent. For longer source runs, use a VGA extender ahead of the switch.

Q: Does the VS0801A switch audio independently from video?

A: No. The audio output follows the selected video source — they switch together. The unit has a single 3.5mm stereo mini jack output (green). There is no independent audio routing capability documented in the evidence.

Q: Is the VS0801A compatible with Linux or Mac-based RS-232 control environments?

A: ATEN's RS-232 Control Tool software is documented for Windows only. The underlying RS-232 serial protocol (19200 baud, 8N1) is platform-agnostic, so Linux or Mac control systems can send serial commands directly if they know the command set — but the ATEN-supplied GUI control utility runs on Windows only.

Marty Allison

The VS0801A is a straightforward tool for a specific job: consolidating eight VGA sources to one display in a rack-mounted AV environment where RS-232 automation is already in play. The fixed RS-232 protocol — 19200 baud, 8 data bits, 1 stop bit, no parity — keeps integration with legacy room control processors predictable. I've specified this unit in training room buildouts where the client had a Crestron processor already driving room control and just needed serial-commanded source switching without paying for a full matrix.

Technical Highlights:

• 75Ω Impedance: Matches the VGA cable standard precisely — reduces reflections that show up as ghosting at the display, particularly relevant when source cables vary in quality or aren't all the same length.
• RS-232 at 19200 Baud (8N1): Fixed protocol means no ambiguity during commissioning — configure your control processor once and it works. The Windows RS-232 Control Tool makes it easy to verify command strings from a service laptop before handing the room off.
• Firmware v1.1.103 (March 2021): Field-upgradeable via Windows utility — if ATEN releases protocol fixes, you can apply them in-place without pulling the unit from the rack.

Deployment Considerations:

• The 1.8m max source distance is a hard constraint — this switch belongs in the same rack as the sources. If your VGA sources are at presenter positions or across the room, budget for VGA extenders upstream of each input before specifying the VS0801A.
• Audio and video switch together — there is no independent audio breakaway. If your room design requires holding audio on one source while previewing video from another, this unit cannot do that; you'll need a matrix switch with independent A/V routing.

Best fit: legacy corporate training rooms or government AV racks with an existing RS-232 control infrastructure, eight or fewer VGA sources, and a single display — where the spec has been locked to analog VGA and replacing the source hardware is off the table.