A compatible replacement AC adapter for the ASUS TUF VG27AQ monitor is available. The original AC adapter specifications are 19V output voltage, 3.42A current, and 65W power. Replacement adapters matching these specifications can be found from various suppliers, including official distributors and online retailers. It is important to ensure the voltage matches exactly (19V) and the current is at least 3.42A or higher, with a power rating of 65W or more. Using an adapter with these specifications will maintain compatibility and proper function. Several sources confirm availability of original or OEM-compatible 65W, 19V, 3.42A adapters suitable for this monitor.

Regarding your issue with startup delays possibly caused by capacitor problems in the adapter, replacing the AC adapter with a new, original or certified compatible unit is a recommended step to resolve power-related startup issues.