SanDisk becomes third maker of Xbox Series X/S expansion cards, launches Optimus GX C50 with 2TB option

SanDisk's Optimus GX C50, the third licensed Xbox Series X/S expansion card line, launched on 2026-08-10 in 512GB (US$109.99), 1TB (US$199.99) and 2TB (US$339.99) capacities — the first 2TB launch option beyond Seagate, sole maker since the consoles' November 2020 debut. Introductory prices revert to US$137.99–US$424.99 thereafter.