Guaranteed compatible upgrades for:

Toshiba Tecra R840 R840-ST8402 (PT429U-00R029)

System Specifications
Maximum Memory:
  • 8GB
  • 2 Sockets
Standard Memory:
  • 2GB (Removable) or
  • 4GB (Removable) or
  • 6GB (Removable)
  • Intel Core i7 2.8 GHz Intel QM67
Bus Architecture:
  • SSD - SATA 2.5-inch 9.5mm; USB 2.0/3.x Type-A
Mfr's System P/N's:
  • PT429U-00R029
Upgrade Path:
  • Up to 8GB can be reached using 4GB modules.