Lenovo ThinkPad R50e 1847 compatible 256MB 333MHz DDR SO-DIMM Black Diamond memory. Compatible computer model: Lenovo ThinkPad R50e 1843, G41 2882, R50e 1842, T41p 2374, T42p 2379, T41 2379, R51 2883, T41 2376, T42 2374, R51 2889, R50 1841, X31 2884, X31 2672, X40 2386, R50p 1832, R50e 1848, T42p 2373, X40 2372, R50 1840, R50e 1849, R50e 1844, X32 2884, G41 2881, R51 2888, X31 2885, R51 1841, R51 2895, G41 2886, T42 2378, R50p 1833, R51 2894, R50 1836, R40 2896, X32 2885, R50e 1834, G40 2388, R51 1831, T41 2378, T41 2374, T41p 2379, G41 2388, T42 2376, T41 2373, X32 2673, R50e 1846, T42 2375, R50 1829, A31p 2652, T41p 2373, X32 2672, R50 1830, X40 2371, X40 2382, R51 1836, R50e 1860, T42p 2378, R40 2897, T42p 2374, R50e 1847, R50 1831, T42p 2376, R51 1840, T42 2379, R51 1829, R51 2887, R51 1830, T42 2373, X31 2673, T42, T41p 2378, R50e 1859. Black Diamond Memory offers the most extensive line of memory solutions today. With our decades of experience specializing in memory, Black Diamond Memory is a proven manufacturer to the semiconductor industry. Our great products combined with our world class service and support have helped us to where we are today. When you have an Black Diamond memory chip, you can count on it being the best available memory for your system. Our system specific Branded Memory line delivers in performance, and is designed to be guaranteed in compatibility with your system. Each of our memory chips come with a lifetime warranty for your peace of mind. Use our Upgrade Configurator to easily find the correct memory module for your system. Please keep in mind that this memory will ONLY work on the models listed above. 15% Restocking fee will apply for non-defective items.