The authentication controller: why the Zen needs one and which pads work
The Cronus Zen authentication controller is the console's own pad on A1: Xbox and PS4 need it for crossover play, while PS5, Switch and PC do not.
The authentication controller is the console's own controller plugged into the Zen's A1 port: Cronus calls it the AUTH controller, and on Xbox and PS4 it must stay connected whenever you play with a different controller, mouse or keyboard. Every Xbox page on this site says the same thing in passing: a supported pad on A1, wired, left connected. This page explains why, when it applies and when it does not, because once you understand what the pad is doing you stop fighting it.
What the console asks for
Xbox and PS4 consoles accept only licensed controllers, and a licensed controller proves itself with a check that its own hardware answers. The Zen has no licence of its own, so it uses the controller on A1.
Cronus's Device panel describes the result as the mirror: it reflects the controller connected to A1, and any controller connected to A2, A3 or Bluetooth appears on the console as whatever the mirror is reporting. Cronus's example is a PS4 controller on an Xbox One: an Xbox One controller sits on A1, so the console sees an Xbox One controller while you play with the PS4 pad. Cronus notes the mirror does not apply to the PS5.
When you need it, by console
| Console | A1 pad needed? | What goes on A1 | Play pad |
|---|---|---|---|
| Xbox Series X/S | Yes, for crossover | An Xbox Series X/S controller, wired; Cronus says it must stay connected the whole time you use the crossover controller | Same pad, or another device on A3 (and A2 for a second) |
| Xbox One | Yes, for crossover | An Xbox One controller, wired, per Cronus's Xbox One page | Same |
| PS4 | Yes, for crossover | A DualShock 4 v2 (CUH-ZCT2), wired; Cronus says the v1 will not work as AUTH | Same, or another device on A3 |
| PS5 | Not with Zen Link | The Zen Link module; with the bypass, a DualSense | With Zen Link, the pad in a front port by USB; with the bypass, an Xbox pad on the adapter in A3 in Cronus's wireless example. PS5 setup |
| Nintendo Switch | No; Cronus says an AUTH controller on A1 is not required | Nothing required | Crossover USB pads on A3; Nintendo pads by Bluetooth. Switch setup |
| PC | No; Cronus offers no official PC support | The pad you play with | Same. PC setup |
Matched layout versus crossover
Cronus's USB setup page describes two layouts, which it calls Matched and Crossover.
| Layout | When | A1 | A3 |
|---|---|---|---|
| Matched | The same controller with the same console: an Xbox pad on an Xbox, a DualShock 4 on a PS4 | The pad you play with | Empty, or a mouse or keyboard |
| Crossover | A different controller: a DualSense on an Xbox, an Xbox pad on a PS4 | The console's own controller, the AUTH controller | The pad you play with |
The wireless version works the same way. Cronus's current example: on a PS5 with an Xbox Elite Series 2, a DualSense goes on A1 and the Elite pairs to the Xbox Wireless Adapter on A3. Cronus also notes that on a PS4 some licensed third-party controllers need a DualShock 4 v2 on A1 to work over Bluetooth. Wired vs wireless controllers on the Zen covers what the play pad can be.
Wired, always. A1 is a USB port, and every crossover setup in Cronus's guide connects the matching controller to it by cable. Use a data cable; a charge-only cable powers the pad and carries nothing. DualSense Edge and Elite covers the premium pads.
When the console does not see the A1 pad
| Cause, in order of likelihood | Check | Fix |
|---|---|---|
| Charge-only or faulty cable | Cronus's test: connect the controller straight to the console and see if it is detected | Data cable |
| Pad on A2 or A3 with A1 empty | Look at the front ports | Supported pad into A1; Cronus warns that even supported controllers can cause errors in the wrong port |
| Pad not one Cronus lists for this console | Brand and model; Cronus notes Series and One pads can share a name | A listed pad; Cronus's older guide lists unlicensed pads as not compatible |
| DualShock 4 v1 on a PS4 crossover setup | Cronus: a light bar visible on the touchpad marks a v2 | A DualShock 4 v2 |
| Output protocol wrong for the console | Zen Studio's Device panel | Set it to the console you use |
| Not synced | The pad lights but the console ignores it | Tap the Zen's small reset button |
| Pad faulty | Test it straight on the console | Replace |
| A1 port faulty | Try a second pad and cable | Warranty; rare |
Cronus's older guide warns that connecting an unsupported controller can trigger an E3 error code, cleared by unplugging and replugging the USB cable; its current troubleshooting page treats E3 codes as corrupted or missing firmware, fixed by bootloader recovery. Controller not recognised is the full diagnostic.
What happens if it drops mid-game
Cronus's crossover note is that the A1 controller must stay connected while any crossover device is in use. If its cable comes out, the console loses the controller the Zen was mirroring, so expect the controller to drop. Plug it back in; if the console does not pick it up, tap the Zen's small reset button. Route the A1 cable so it cannot be pulled, and keep the pad charged: Cronus warns that controllers might not charge through the Zen. A Zen that keeps disconnecting covers the other causes.
Can a firmware update remove the need for it?
Players ask whether an update could make the A1 pad unnecessary on Xbox or PS4. Nothing Cronus publishes suggests it: its guide treats the A1 controller as required for crossover on those consoles and offers no alternative. On PS5 Cronus took a different route, the Zen Link module, which in its current PS5 Native Mode needs no A1 pad; Cronus's older guide described it reaching the console through Remote Play. How the Cronus Zen works has the whole picture.
Quick reference
| Situation | Do this |
|---|---|
| Setting up on Xbox Series | An Xbox Series X/S pad, wired, in A1; leave it there |
| Setting up on PS4 for crossover | A DualShock 4 v2, wired, in A1 |
| Setting up on PS5 | Zen Link in A1; pad in a front port; no AUTH pad needed |
| Setting up on Switch | No AUTH pad; crossover pads on A3 |
| Want to play on a different pad | Put it on A3; A1 stays as it is |
| Want to play wireless | DualShock 4 or Nintendo pads by Bluetooth via P2; Xbox pads through the Xbox Wireless Adapter on A3; A1 stays wired |
| Console does not see the A1 pad | Cable, then port, then pad model, then tap reset |
| Drops mid-game | Reseat A1; route the cable; charge the pad |
Frequently asked
- What is the authentication controller on a Cronus Zen?
- The controller on the Zen's A1 port that the console sees. Cronus's USB guide calls it the AUTH controller, and its Device panel calls the A1 pass-through the mirror. Xbox and PS4 crossover setups need it.
- Do I always need one?
- No. In Cronus's matched layout, the same controller on the same console sits on A1 and is the pad you play with. A separate AUTH pad matters in crossover, when you play with a different device on A3.
- Does PS5 need an authentication controller?
- Not with Zen Link: the module sits in A1 and the pad in a front port, and Cronus notes the A1 mirror does not apply to PS5. With the bypass, the DualSense itself goes in A1, and Cronus's wireless crossover example on PS5 puts a DualSense on A1 with an Xbox pad on the adapter in A3.
- Does PC or Switch need one?
- No. Cronus's Switch page says an AUTH controller on A1 is not required. On PC the pad you play with goes on A1 and Windows has no licence check, though Cronus offers no official PC support.
- Can the authentication controller be wireless?
- No. Every crossover setup in Cronus's guide connects the matching controller to A1, a USB port. The pad you play with can be wireless.
- Can a firmware update remove the need for the pad?
- Nothing Cronus publishes suggests it. Its guide treats the A1 controller as required for crossover on Xbox and PS4; on PS5 it uses the Zen Link module instead.
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