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Biwin Unveils SIM-Sized ‘Mini SSD’ With PCIe 4.0 Speeds

Support from GPD Win 5 alongside OneXPlayer Super X underscores interest despite a non-standard form factor with unknown pricing

Overview

  • The Mini SSD (1517) measures just 15×17×1.4 mm and offers 512 GB, 1 TB and 2 TB capacities with claimed sequential reads up to 3.7 GB/s and writes up to 3.4 GB/s over PCIe 4.0 x2.
  • Its performance is more than three times faster than microSD Express and approaches full-size SD Express bandwidth in a footprint under half the size.
  • Biwin highlights an IP68 water and dust resistance rating plus three-meter drop protection housed in a SIM-style tray for easy insertion and removal.
  • Two Chinese gaming handhelds—the GPD Win 5 and OneXPlayer Super X—are the first devices announced with dedicated Mini SSD slots at ChinaJoy.
  • The format currently lacks JEDEC standardization, requires proprietary host support and has no announced pricing or retail availability, leaving broader adoption uncertain.