The RX418 Synology 4‑Bay Expansion Unit seamlessly extends your existing NAS, delivering additional storage capacity and enhanced data protection without compromising performance. Designed with Synology’s proven hardware and software integration, this expansion unit plugs directly into your main system, offering a smooth, plug‑and‑play experience that scales your data environment effortlessly. Whether you’re archiving media, backing up critical files, or running virtual machines, the RX418 provides reliable, high‑throughput access to a growing library of drives. Its robust chassis and efficient cooling maintain optimal operating temperatures, ensuring consistent performance over time. Expand your storage footprint with confidence, knowing your data remains secure and easily accessible.