Innovation: world's industry-leading front installation HD LED display, saves 80% of space. In addition to front maintenance capability, ACE BLOCK series features industry-leading front installation design, facilitating installation without back space required. Practicality: cable-free connection. ACE BLOCK series is free from jumper cables for power or data connection, which not only helps save time in installation but also makes the entire display look neat and clean. Dual Backup: ACE BLOCK series is designed with both power and data backup to ensure uninterrupted operation, which is essential for many application scenarios.