Find Accessories Search within Memory Keys & Microdrives   Find compatible accessories Find my model number Or enter a Enter your model number (ex: 12342GU):   - or - Select your product: Select One Essential desktops   C315   C325   C340   C540   H200   H210   H320   H330   H520s Essential laptops   B450   B460   B470   B550   B560   B570   B570e   B575   G450   G455   G460   G470   G480   G550   G555   G560   G570   G575   G580   G770 IdeaCentre desktops   A300   A520   A600   A700   A720   B305   B320   B500   B510   B520   B540   B540p   Horizon 27   K210   K220   K230   K300   K305   K320   K330   K430   Q150   Q180   Q190 IdeaPad laptops   N580/N585   S10   S10-2   S10-3   S10-3t Tablet   S12   S205   S206   S300   S9e/S10e   U110   U150   U260   U300s   U310   U310 Touch   U310 Ultrabook   U330   U350   U400   U410 Ultrabook   U450p   U460   U510   U550   V360   V370   V460   V470   V560   V570   Y400   Y410   Y430   Y450   Y460   Y460p   Y470   Y470p   Y480   Y500   Y510   Y530   Y550   Y550p   Y560   Y560p   Y570   Y580   Y650   Y710   Y730   Yoga 11   Yoga 13   Z360   Z370   Z380   Z400   Z400 Touch   Z470   Z480   Z500   Z560   Z570   Z575   Z580 IdeaPad tablets   A1   A2017   A2019A   K1   Lynx K3011   S2019A   S2110 Lenovo 3000 desktops   G530   J100   J105   J110   J115   J200   J200p   J205   S200   S200p   S205 Lenovo 3000 notebooks   C100   C200   C205   G500   G530   N100   N105   N200   N500   V100   V200 Think Tablets   Helix   ThinkPad Tablet 2 ThinkCentre desktops   A30   A35   A50   A50p   A51   A51p   A52   A53   A55   A57   A57e   A58   A58e   A60   A61   A61e   A62   A63   A70   A70z   A85   E50   E51   E71z   E72   E72z   E91   E91z   E92   E92z   M50   M50e   M51   M51e   M52   M52e   M55   M55e   M55p   M57   M57e   M58   M58e   M58p   M70e   M70z   M71e   M71z   M72e   M72z   M75e   M77   M78   M80   M81   M82   M90/M90p   M90z   M91p   M92/M92p   S50   S51 ThinkPad laptops   A20m   A20p   A21e   A21m   A21p   A22e   A22m   A22p   A30   A30p   A31   A31p   E120   E125   E130   E135   E220s   E320   E325   E330   E335   E420   E420s   E425   E430   E431   E435   E520   E525   E530   E531   E535   Edge 11   Edge 13   Edge 14   Edge 15   G40   G41   G50   L410   L412   L420   L421   L430   L510   L512   L520   L530   R30   R31   R32   R40   R400   R40e   R50   R500   R50e   R50p   R51   R51e   R52   R60   R60e   R61   R61e   R61i   SL300   SL400   SL410   SL500   SL510   T20   T21   T22   T23   T30   T40   T400   T400s   T40p   T41   T410   T410s   T41p   T42   T420   T420s   T42p   T43   T430   T430s   T430u   T43p   T500   T510   T520   T530   T60   T60p   T61   T61 14 Wide   T61p   T61u   ThinkPad Twist   W500   W510   W520   W530   W700   W701   X1   X1   X100e   X120e   X121e   X130e   X131e (AMD)   X131e (Intel)   X20   X200   X200 Tablet   X200s   X201   X201 Tablet   X201s   X21   X22   X220   X220 Tablet   X23   X230   X230 Tablet   X24   X30   X300   X301   X31   X32   X40   X41   X41 Tablet   X60   X60 Tablet   X60s   X61   X61 Tablet   X61LS   X61s   Z60m   Z60t   Z61e   Z61m   Z61p   Z61t ThinkStation workstations   C20/C20x   C30   D10   D20   D30   E20   E30   E31   S10   S20   S30     Product categories       AC Adapters - IdeaPad (2)       AC Adapters - Other (6) Accessories   Accessories (57)     Audio & Video (1)       Backpacks (1)     Batteries & Power (8)       Business Cases (5)     Cables & Connectors (1)       Cables - Multimedia (1)     Carrying Cases (8)       Conventional Docks & Port Replicators (6)       Desktop Memory - Other Desktops (3)     Docks & Port Replicators (9)       Flat Panel Monitors - 17" (1)       Flat Panel Monitors - 19" (4)       Flat Panel Monitors - 20-33" (7)       Graphics Cards (1)       Keyboards (1)     Keyboards & Mice (5)     Memory (7)       Memory Keys & Microdrives (1)       Messengers (1)       Mice (4)     Monitors (12)       Notebook Memory - Other Notebooks (4)       Optical Drives - Desktops (1)       Physical Security (1)       Privacy Filters (1)       Removable Disk Drives (1)     Security (2)       Sleeves (1)     Storage (3)     Tablet Accessories (1)       ThinkPad Tablet Accessories (1)       X Series UltraBases (3)         Sort by:   Most popular Price (low to high) Price (high to low) Availability   Compare selected View all  |  1  |   Lenovo USB 2.0 Essential Memory Key - 4GB 45J7904 $17.09 $13.67 8 in stock Added to shopping cart: Lenovo USB 2.0 Essential Memory Key - 4GB 45J7904 $17.09 $13.67   Change quantity to:   More details CompareAdded to compare Compare selected View all  |  1  |