Centon S1-SDHC4-4G 4GB Class 4 SDHC memory card. Compliant with SDHC specification, delivers sustained sequential throughput suitable for standard-definition video recording, embedded systems, and legacy device boot environments. 4GB capacity with Class 4 speed rating (minimum 4 MB/s write performance). Compatible with SDHC-enabled cameras, media players, industrial controllers, and legacy servers requiring removable flash storage. Typical applications include firmware updates, configuration backups, and data logging on older enterprise hardware. Part number S1-SDHC4-4G. Refurbished condition, tested and guaranteed. Available via quote.