Guaranteed compatible upgrades for:

HP/Compaq ProBook Series Notebook 4520s


System Specifications
Maximum Memory:
  • 4 GB using a 32-bit Operating System
  • 8 GB using a 64-bit Operating System
Expansion:
  • 2 Sockets
Standard Memory:
  • 2 GB (Removable) or
  • 4 GB (Removable) or
  • 8 GB (Removable)
CPU/Chipset:
  • Intel Core i5 Intel HM57
  • Intel Core i3 Intel HM57
  • Intel Core i7 Intel HM57
Bus Architecture:
  • SSD - SATA 2.5-inch 9.5mm; USB
Mfr's System P/N's:
  • VE680AV; VE681AV; WA466AV; WD836EA; WD837EA; WD838EA; WD839EA; WD841EA; WD842EA; WD843EA; WD844EA; WD845EA; WD846EA; WD848EA; WD849EA; WD850EA; WD852EA; WD853EA; WD854EA; WD855EA; WD856EA; WD857EA; WD858EA; WD860EA; WD861EA; WD901EA; WD906EA; WD908EA; WD909EA; WD912EA; WD914EA; WD915EA; WH288UT; WH289UT; WH290UT; WH298UT; WH299UT; WH300UT; WJ345AA; WJ346AA; WJ347AA; WJ348AA; WJ349AA; WJ350AA; WK319EA; WK320EA; WK321EA; WK328EA; WK329EA; WK331EA; WK359EA; WK360EA; WK366EA; WK368EA; WK369EA; WK374EA; WK380EA; WK381EA; WK382EA; WK383EA; WK386EA; WK387EA; WK407EA; WK408EA; WK487ES; WK493ES; WK506EA; WK511EA; WK512EA; WK513EA; WK521EA; WK523ES; WN452AV; WN453AV; WP395PA; WP419PA; WP420PA; WP421PA; WP424PA; WP425PA; WQ427LA; WQ428LA; WQ935PA; WQ947PA; WQ979PA; WQ980PA; WQ984PA; WQ985PA; WQ989PA; WQ990PA; WQ991PA; WQ992PA; WQ993PA; WR005PA; WR006PA; WR010PA; WR024PA; WS702ES; WS709EA; WS713EA; WS714EA; WS720EA; WS722EA; WS738EA; WS745EA; WS751EA; WS752EA; WS753EA; WS804EA; WS869EA; WS870EA;
Upgrade Path:
  • Virtually any configuration up to 8GB can be reached using any combination of 2 and 4GB modules.
Comments:
  • MODULES MUST BE ORDERED AND INSTALLED IN PAIRS for Dual Channel mode.
  • If 4GB is installed, the recognized memory may be reduced to 3.5GB or less (depending on system configuration and memory allocation).
  • Maximum configurations require a 64-bit operating system