Brand new, unopened. I purchased this on Mercari, but my circumstances changed and I no longer need it, so I'm selling it. This is a 500GB ultra-compact external SSD that achieves a maximum read speed of 1000MB/s via USB3.2 Gen2 connection. - Brand: ELECOM - Model Name: ESD-EMB0500GBK - Storage Capacity: 500GB - Connection Interface: USB3.2 Gen2 - Read Speed: 1000MB/s - Write Speed: 700MB/s - Shock Resistance: High shock resistance - Size: Ultra-compact