LaCie Rugged SSD4 can transfer a 4K movie in seconds USB4 promises 4000MB/s read speeds, raising questions about real-world performance Pricing ranges from $134.99 to $479.99 across three models Seagate’s LaCie brand has introduced the Rugged SSD4, its first USB4-based portable SSD, aimed at professionals who need speed in difficult environments. The launch is notable because it comes at a time when the tech industry is shifting attention toward Thunderbolt 5, yet Seagate has chosen to focus on USB4. LaCie’s Rugged SSD4 USB4 interface supports 40Gbps bandwidth, and promises read speeds of up to 4000MB/s, fast enough to copy a...